Those who want to increase the power of the car engine by improving the exhaust gas output want to put the spider on the Priora. The formation of gas occurs in the cylinders from which it is collected in the exhaust manifold. In addition to the discharge function, the collector also participates in filling and blowing the combustion chamber due to exhaust waves that appear in the resonating mode.
How does a collector work? What are the functions of the "spider"?
Increases resource and protects the engine
Here, with the outlet valve open, the gas is under pressure (in the chamber), and normal pressure is observed in the manifold. This is how a wave is obtained, which, reflected from the resonator or catalyst, is sent back to the cylinders, where, mainly at medium speeds, it merges with the next exhaust stroke. Thus, an additional opportunity is obtained for the next portion of the exhaust gases to leave the cylinder.
On many vehicles, the manifolds are made of cast iron and are mounted so that one part is attached to the internal combustion engine, and the second to the catalyst or (if there is no catalyst) to the exhaust pipe. To avoid burns and increase fire safety, these parts are fenced off with a metal screen.
The exhaust valve of the Priora car works in very difficult conditions, because. Exhaust gases have an exit temperature of several thousand degrees. On domestic cars in winter, due to rapid cooling, condensation often occurs on this element, which leads to the appearance of rusty spots. Therefore, if the valve begins to rust, this is another reason to put a "spider" on the Priora, which will remove gases personally from each cylinder and create standing waves at the required speed.
An indispensable condition for the occurrence of such waves is the presence of exhaust pipes of the same length, which leads to the appearance of rather intricate forms of "spiders" for different engines.
Choosing the right modification
Part installed on the machine
When choosing a "spider" on the Priora, two options are most often considered - 4-1 or a modification of 4-2-1. It all depends on what final result we want to get. The 4-1 manifold delivers optimal power boost over a fairly narrow rev range. He has four pipes from the valves connected into one without transitions. Manifolds are available with both short and long pipes. Modification 4-1 is suitable for engines with high afterburner, a speed range of 6 to 10 thousand per minute. Usually these "spiders" are put on engines with camshafts having a phase of more than 285 degrees.
The 4-2-1 spider is a part in which four pipes from the cylinders are connected first in pairs, and then into one common pipe. It gives a less significant increase, but in a wider rpm range. These parts are put on medium-forced engines. It is believed that short versions of the 4-2-1 model are effective at revolutions of more than 4500 per minute, and long ones at an average speed of two and a half to four thousand per minute.
The "spider" configuration 2-2, when four pipes pass in pairs into two, each of which has a separate outlet (two outlets are obtained), is practically never found in serial production. However, amateur welders perform such modifications for themselves, as shown in the photo. Such work was carried out by autogenous and camping, for which billet pipes were cut and fitted by means of corners. Some people think that such a 2-2 "spider" configuration does not provide the ability to connect a lambda, so its use is not always justified.
There is no single scheme for selecting a "spider" 2-1 or another for the Priora car, since the choice of modification is made mainly during tests on the stand. But there is a formula for the length of the primary pipe (distance from the valve to the end of the primary pipe), which is the following:
L \u003d A x C x DxD / 1400 (constant) x VxV, where
The resulting length must be multiplied by integers. The total length of the pipes from the connection to the valve on the Priora is approximately (!) Determined by the formula (regardless of the modification 2-1 / 4-1):
M \u003d 2159 x (K + 180) / T - P, where
K - the size of the opening of the exhaust channel in degrees to BDC, along the crankshaft;
T - the required engine speed, under which the car is tuned;
P is the length of the outlet channel.
After the car owner has decided on the required model of the "spider", he needs to buy a muffler fitted in length, a resonator (straight-through, sports), a graphite ring and an oxygen sensor to carry out the work. The 4-2-1 models offered in stores for the Priora car have a nut for the oxygen sensor, so installing it will not be difficult at all. If the spider does not have a built-in sensor, then after installing it, you will need to replace the firmware on the ECU.
When buying, you need to look at what engine size this or that “spider” is designed for, as well as the diameter of the pipes. The increased diameter of the secondary pipes, for example, contributes to improved cylinder cleaning from exhaust gases. The outlet flange of commercially available spider manifolds is usually 51 or 63 mm.
How to put a 4-2-1 "spider" model on the Priora?
car bottom
In order to put a "spider" 4-2-1 on the Priora, you first need to dismantle the previous version of the collector. This will require tools: a head on "13" (with an extension), a flat screwdriver, Wd-40 for processing nuts.
Before starting the installation of the "spider" 4-2-1, it is necessary, in order to avoid burns, to check that the exhaust system has cooled down. Then it is required to disconnect the muffler pipe (additional) from the collector. For this:
We bend the edges of the plate, unscrew 3 nuts for mounting on the pipe (using the head on “13”).
- Remove the retaining plate.
- We remove the protective shield.
- We shift the muffler pipe flange and the gasket from the studs on the collector.
- We unscrew the fastening bolts (2 pcs.) Using the head on "13".
- We unscrew the fastening of the bracket to the cylinder block (2 pcs.).
- We remove the bracket.
To remove the collector before installing the "spider" 4-2-1, unscrew the nut of the rear engine mount on the bracket, loosen the bolt (fastening the mount to the body). We take out the mounting bolt, unscrew all three nuts that secure the rear support bracket to the cylinder head, shift the bracket along the studs on the cylinder head.
Then we unscrew the nut that secures the bracket from the coolant supply pump pipe, from the stud in the cylinder head. After that, loosen the nut attaching the bracket to the pipe (pump) stud. We remove the entire bracket to the side. We unscrew the 8 nuts securing the manifold, slide it along the studs on the cylinder head and take it out down. Now you can install the "spider" 4-2-1.
Modification 4-2-1 and resonator
Before installation, the mating surfaces of the collector and cylinder head must be cleaned of carbon deposits. If the "spider" model 4-2-1 is chosen correctly, then it should "sit" on the studs on the cylinder block without any modifications. Before tightening the nuts, lubricate the studs with graphite grease, check the gasket of the collector. Further assembly is carried out in the reverse order, while making sure that not a single wire or hose touches the newly installed 4-2-1 configuration, nor does it touch the body parts under the bottom, because otherwise the parts may be damaged by excessive heating of the collector.
The cost of the "spider" 4-2-1 is very democratic, about 2 thousand rubles. Therefore, if a motorist has the skills to work with equipment, then he can significantly improve the performance of the engine with his own hands. In a car repair shop, you can order a full range of work, taking into account components, at a price of about 7 thousand rubles, including diagnostics.
Despite the fact that the human being is naturally afraid of spiders, many are increasingly choosing them as exotic pets. Spider owners say it's perfect if you don't have time to take care of your little friend. If you do not suffer from arachnophobia and dream of acquiring an unusual pet, we will help you understand the features of care and maintenance, types of spiders, as well as all the pros and cons of such a choice.
What spiders can be kept at home
Not all types of arthropods can be kept at home. Some of them are deadly poisonous, while others have an unremarkable appearance (for example, a gray spider or a haymaker spider, which most often live in secluded corners of houses and apartments). Many opt for tarantulas, and there are several reasons for this:
- They have a presentable appearance: large size, bright color, hairy body.
- This species includes more than a hundred subspecies, from which you can choose a pet for every taste.
- They live somewhat longer than other species.
- They can reproduce in captivity.
- Tarantula venom does not pose a mortal threat to a healthy adult.
Popular types of tarantulas are: white-haired, bicolor, giant, striped, horned and others. In addition to tarantulas, tarantulas, cross spiders, wolf spiders or jumping spiders are often the choice. The listed species rarely bite people (only in the event of a sudden attack), but even if this happens, their poison does not cause any serious consequences.
Where to keep
Usually, glass or plastic terrariums with good sealing are used to keep spiders. They can be of a horizontal and vertical type: the former are suitable for terrestrial spiders, while arboreal species require a vertical type of dwelling with effective ventilation. Therefore, it is very important to know the type of your pet in order to recreate natural conditions for him as accurately as possible.
Most species do not need much space, as they spend almost all the time passively, hiding in hollows, minks and other shelters. However, the length of the dwelling must be at least twice the distance of the pet's leg span. In a terrarium that is too large, the pet will experience obvious discomfort and a desire to hide away. 
The terrarium should also not be too high, so that when falling from the walls, the pet is not damaged. For example, for adult tarantulas, a container of the following parameters is quite enough: 30*30*20 cm. larger size, based on the size of the pet.
It is important to understand that the needs of spiders in space are fundamentally different from most of the animals we are used to - the arthropod does not need much space for walking and activity.
Is it possible to keep several individuals in one container
Under natural conditions, some species of spiders can live together, and these can even be individuals of different sexes and age groups. However, in captivity, it is not recommended to keep two or more representatives of the same species in one container - this is associated with high risks of aggression or cannibalism, and as a result, injury or death of pets. It is also necessary to seat the babies after the first molt.
Important!The joint maintenance of spiders of different species in the vast majority of cases ends in the death of one of the pets.
In order for an exotic pet to please you with its presence for a long time, you need to work on the equipment of its home. When arranging a terrarium, it is necessary to think over the lighting, decor and filler, regulate the temperature and humidity of the air. 
What do you need in a terrarium
Be sure to have a layer of substrate in the terrarium. Firstly, it will help to recreate a more natural environment for the pet, and he will not sit on bare plastic or glass. Secondly, the main task of the substrate is to maintain a stable level of humidity inside the container. For this reason, neither sand nor stones are suitable as a filler. The most acceptable options are vermiculite and coconut filler. Both fillers are highly hygroscopic.
The need for decor is determined by the type of your pet. For example, for spiders weaving a web, no special decor is required, since soon it will not be noticeable under a layer of beautiful lace. The main thing - provide the pet with all the conditions for weaving. But for species that like to hide in shelters, you can buy ceramic houses, castles and shards, cork oak products or artificial plants.
Sealing and ventilation
It doesn't matter what you use as a home - a food bowl or a glass special terrarium, it must be securely closed with a lid, otherwise one morning you may find that the spider's house is empty, and its owner is walking around your apartment. But when sealing the container, do not forget that the arthropod needs fresh air and good ventilation of the container, so several holes should be made in the lid through which the spider will not get out, but will get access to oxygen. If the pet lives in a plastic container, it is better to make holes on the side wall in two rows: from below and from above. To do this, you can use a hot nail of a small diameter. 
Lighting
The need for decor depends on the type of spider. For example, for tarantulas there is no need to install additional light, as they are nocturnal inhabitants who are excellent at navigating in the dark. If you want to install light, give preference to infrared lamps - their radiation is invisible to the pet. It is undesirable to choose incandescent lamps, and yet if you choose this option, install them outside the container to prevent burns to the animal and drying out of the air.
Temperature
Spiders are able to tolerate a very large temperature range. Optimal indicators are 23-26°C. Additional heating may be needed only during the transitional autumn-spring period, when the heating is already turned off or not yet working. To provide heat, you can purchase special cords and plates for heating, as well as a thermostat. Devices must be installed either under the container (for tree spiders) or on the walls of the house (for terrestrial species).
Important!The temperature in the room and terrarium should not exceed 31°C.
Humidity
This indicator is very important for the health and well-being of the pet. The required humidity level for each species may vary. You can determine the deficiency or excess of moisture by the behavior of the pet:
- the spider constantly sits at the drinking bowl, dragging soil into it - it is too dry in the container;
- the spider constantly sits on the walls of the tank - this behavior indicates excessive humidity (but sometimes this can just be a pet's favorite habit);
- arboreal species descends to the substrate - dry in the container;
It is not worth spraying the substrate with a spray bottle; instead, it is better to use a syringe without a needle or a watering can with a thin hole. It is important to determine by eye when there will be enough moisture (the substrate should get wet by 2/3). Adults in the container must have a drinking bowl, it is worth choosing its size in such a way that the pet cannot fit in it and drown itself. Keep in mind that swamp breeding should not be allowed in the terrarium. In conditions of excessive humidity, midges, mold and fungus easily start up, which can kill the arthropod. 
What is required in the care of a spider
So, it is obvious that the following accessories will be required to keep an exotic pet:
- sealed container made of glass or plastic;
- drinker;
- filler;
- air heater;
- thermometer;
- decor (depending on the type of spider);
- a small plastic box for isolating a pet (for example, when cleaning a terrarium);
- long tweezers, 20-25 cm (for feeding and garbage collection);
- long brush (helps with pet transplantation);
- additional lighting (depending on the type).
Did you know? For agriculture, spiders are very useful - their main food is insects that destroy crops. Thus, spiders annually save up to 30% of the world's crop!
How to feed a spider at home
Spiders are representatives of obligate predators, therefore they must eat exclusively products of animal origin. The most common food for spiders are fodder insects: various types of cockroaches (Turkmen, Argentine, marble), larvae, flour worms. You need to buy food in specialized stores. It is not recommended to feed your pet with pet cockroaches, flies, any insects or small animals that you have caught yourself.
Firstly, one cannot be sure of their health (many insects can be carriers of diseases), and secondly, it can be difficult for a spider to cope with a large insect, frog or mice, moreover, such food is not familiar to him.The frequency of feeding is determined by the age of the pet. Toddlers and teenage spiders need food 3 times a week, adults need to be fed 1-2 times. The size of one serving should correspond to the dimensions of your pet's belly. However, in many cases, spiders are able to eat much larger portions. You need to give food with tweezers, the remains after the meal must be removed. 
Important!Do not panic if your pet has no appetite. The period of rest from food can last weeks and even months in some spiders.
In no case should you overfeed the spider. This increases the risk of a hernia or injury if it falls from the wall of the terrarium, and besides, such specimens are not suitable for breeding. If the pet refuses food, but at the same time its abdomen is of a normal size (it has not fallen), there are no injuries on the body, there will be no molting soon and its conditions are good, then you don’t have to worry.Terrarium cleaning
Careful cleaning of the terrarium with the replacement of the substrate is necessary every 8-12 months, as well as if mold or fungus has started. There is no need to clean your home more often. You should always clean up leftover food with tweezers after a meal. At the time of cleaning, the tenant must be transplanted into a container. To do this, you need to open the terrarium, use a brush to push the spider to the container. 
Moulting period
Molting is a physiological, very important period for spiders, during which the growth and renewal of the whole organism occurs. Shedding consists of shedding the old hard cuticle and growing a new one. The process starts under the influence of special hormones. During the period when the new cuticle (exoskeleton) has not yet hardened, the pet is very vulnerable and defenseless.
You can understand that a molt is soon planned by the behavior of the arthropod: the spider stops eating, becomes inactive. Tarantulas create a bed of cobwebs for themselves, lay on their backs and stay in this position until the old skeleton is shed. The speed of this process depends on the age of the pet: the younger the spider, the faster the molt passes. 
What you need to remember the owner of the spider during the molting period:
- you can’t offer food to the spider during this period - live food insects can damage your pet;
- you need to feed the arthropod no earlier than 2-3 weeks;
- in no case should you touch the spider, especially when it lies on its back;
- do not try in any way to "help" the pet get rid of the old skeleton;
- you can remove the old skeleton only after the pet turns over and stands confidently on its feet.
Did you know? In terms of strength, the web is equated to steel wire. If it were possible to create a web rod only 0.5 cm thick, it could stop a tank or a bulldozer. The only reason why this durable and environmentally friendly material is not used in industry is the inability to recreate it in the laboratory.
How many years live
Of course, the life expectancy of a pet will depend on how correctly you can create conditions for it. However, in general, with good care, spiders of various species have the following life expectancy:
- tarantulas - live an average of 15-20 years;
- tarantulas - life expectancy is highly dependent on the species, some in captivity live only 1-2 years, but there are varieties that can live up to 20-30 years (females live longer than males);
- cross - a maximum of six months live, males die after mating, females - after creating a cocoon;
- jumper - in captivity, females live up to 3 years, males live 1-2 years;
- peacock spider - lives a maximum of 9 months;
- goliaths - females live up to 8-9 years, males - up to 6 years.
Is it possible to take
Most often, such questions are asked by owners of large species, for example, tarantulas and tarantulas. It should be clearly understood that spiders cannot be considered full-fledged tame animals, they are guided by physiological instincts, which is why attempts to play with a pet, train it or try to carry it in your arms are completely pointless and doomed to failure.
You also need to be aware that a change of scenery will always be very stressful for a spider, especially if the temperature, lighting and humidity of the environment differ from those in the terrarium. Any careless movement can lead to injury or death of the arthropod, especially in the case of small species and babies. Some species can immediately run away from you (for example, jumping spiders), and it will be very difficult to find a fugitive in an apartment. In a state of stress, a pet can bite you, and although the bite will not be fatal, pain is guaranteed. Spider venom can be dangerous if you have allergies (which you may not even know about). 
All pets have a different character, so some may calmly respond to your attempts to invite him into the palm of your hand, others will strive to bite as soon as you put your hand into the terrarium. Based on this, it is not recommended to attempt to pick up a pet.
What to do if a spider bites
As mentioned earlier, the bites of spiders, which are often kept at home, do not pose a deadly threat if you do not have allergies. Otherwise, anaphylactic shock may occur with the most negative consequences. 
A bite is often accompanied by such symptoms: itching, redness, pain and swelling in the affected area. Occasionally, malaise may occur and body temperature may rise. All symptoms go away after a few days. The algorithm of actions for a bite is as follows:
- If a limb is affected, it must be pulled over with a bandage or rope above the bite.
- Wash the puncture site with soapy water and treat with an antiseptic.
- Apply an ice compress.
- Drink plenty of water for a speedy detox.
- If necessary, drink an antihistamine.
Content pros and cons
Before deciding to purchase such a pet, weigh the pros and cons of keeping it.
Among the advantages:
- does not require a lot of time and money for care and maintenance;
- silent, calm and almost imperceptible animal;
- it is interesting to observe the behavior of the spider.
- there is always a risk that the spider will bite, run away;
- some species have a very short lifespan;
- cannot be trained, is not a tame pet in the standard sense.
Important!For children, the elderly, people with allergies or other serious illnesses, a spider bite can be bad!
Such an exotic pet will clearly attract the attention of all visitors to your home. If you and other family members do not have arachnophobia or allergies, then it is perfectly acceptable to have a spider. But if you want to get emotional feedback from a pet, spend more time with him, then you should look at more social types of animals.
Video: keeping exotic spiders at home
Spiders - which is better? 4-2-1 or 4-1
D The most common exhaust system tuning questions are: “Which spider is better 4-2-1 or 4-1?” and “Is there any point in installing a spider?”. Once upon a time, I myself was puzzled by this question theoretically, having wandered around the sites and forums for a long time, I did not find anything adequate and reasonable and abandoned the search for truth with a task in my heart. As I managed to make sure before writing this article, nothing has changed dramatically on the network, it is still complete darkness and that it is difficult to figure out in which cases it is applicable, but still let's try!
And let's start with is there any sense in installing a spider after all, there are individual "experts" who claim that most tuning spiders are worse than a standard collector. Yes, of course there are such, but they were originally conceived not to improve engine performance, but often for a cool sound. But this is more an exception than a rule, since, after all, most of the range of tuning spiders is aimed specifically at improving the performance of the motor, and not as if not worsening. Yes, and as I see it, the problem here is different, it’s just that some people are waiting for some magical gains from tuning the spider, and often on almost stock engines. And then tales are born that exhaust tuning is a waste of money. And in fact, the sense of tuning a spider on a stock engine is about the same as from a nulivik, it only costs more. Of course, the comparison is rough, but at least it clarifies something, because no one will argue that there is sense from a low-resistance filter, although few people felt it after installation. So with the spider, the meaner the motor, the more it needs a good exhaust, but the drain will not get any worse from tuning the spider. The main thing is that his pipes are of the same length, so that the motor runs smoothly, although probably everyone already knows this.
Which spider is better 4-2-1 or 4-1? Before this question, you need to answer another - "What do you want from the exhaust?". Because most tuning parts “emphasize” either the top or bottom, and the spider is no exception. It is known that 4-2-1 Spiderkeeps the bottom and adds the top but not like 4-1 , 4-1 often created only for the top, but this does not mean at all that 4-1 must be placed exclusively on the "horse" motor, and 4-2-1 only on the "grassroots". There can be quite a lot of options here, for example, you are building a “horse” motor, but you want to leave at least some bottoms, no one bothers you in this case to put 4-2-1 , because 4-1 this is not a very urban option, but if you don’t care and want a rocket on top then 4-1 will be better. What is it connected with? IN 4-2-1 2 pipes out of 4 are connected to 1 and only then they are connected to the main line, because of this, the pressure of the “reverse wave” is less, since it is more efficiently distributed rushing back. The effect of the "reverse wave" in the exhaust system is most noticeable after the engine speed is reset, this is due to the fact that the pressure in the exhaust line is higher than the pressure of the next portion of the exhaust. And accordingly with the exhaust system 4-1 on the bottoms, after a speed reset, a kind of gas “plug” is formed in the exhaust system, slightly suffocating the engine. Therefore, in city cars, install a system 4-2-1 preferable 4-1 .
For the sake of objectivity, it is worth saying that it's not just about the layout of the spider, is it 4-2-1 or 4-1. It's just that this is practically the only spider factor that we can influence when buying, that is, we want 4-2-1, we take 4-2-1, we want 4-1, it will be so, and then it will be much more difficult. Since the rest important factors such as the diameter and volume of pipes when selling, it’s not as indicated by the manufacturer, and there is not so much assortment for these parameters. Therefore, what is written below will be more useful to you as a general theory, unless of course you decide to release it yourself, but in this case one article will not be enough. So, the larger the pipe diameter, the higher its throughput, but the lower the effect of "purging" or gas-dynamic inertia - in other words the exhaust gas accelerating in the pipe creates a rarefaction and draws the next portion of the exhaust gas. Accordingly, the larger the diameter of the pipe, the more gas is needed to have this very effect of gas-dynamic inertia. Accordingly, the lower the operating speed range, the smaller the volume of exhaust gas for a certain period of time, and therefore the pipe diameter should not be excessive.
There are also often discussions about the length of the pipes - something like if the pipe is longer it’s good for the bottom, if it’s shorter then for the top, in part it’s true, but it’s not entirely about the length (although not without it), it’s just about ratio of volume and diameter. Since there are certain norms for the ratio of the volume of the exhaust manifold pipe to the volume of the cylinder, it is +/- 2.0 (it depends on a bunch of factors and fluctuates in one direction or another up to 0.5). And since the diameter of the pipes, depending on the desired characteristics, has a clear meaning, it turned out that the downstream motor with a smaller diameter had a longer pipe, and the upper one was shorter due to the larger diameter. Now, as for the length, people who are seriously involved in finalizing the exhaust in practice confirm that with the same diameter of the pipes and different lengths, the characteristics of the motor also change.
And finally, a few words about the "thermal tape" there are a lot of ideas on this subject, but the functionality of this refinement is quite banal and whoever drowned the "potbelly stove" (or any other stove) knows that it "pulls" worse through a cold pipe than a hot one. Everything is the same here the hotter the spider, the less resistance its walls create for the passage of gas, and "thermal tape" contributes to so that the spider warms up more and cools down more slowly, that's all.
Something like this, we tried to explain everything that we managed to fit into one general article here, of course it turned out not quite concisely and did not fully reveal the topic. But if necessary and if any questions arise on your part, we will write explanatory articles on this topic.
Many owners of the VAZ 2114 do not always like the operation of the power plant in the factory version. The engine of this car is equipped with an injection power system tuned to the Euro-3 standard. And it is precisely because of this standard that the gas exhaust system “eats” up to 10 liters. from. power.
To eliminate this unpleasant fact, many are subjecting the exhaust system to modernization, installing the place of a regular tuning manifold, popularly called the "Spider".
"Spider" is the same collector, but with separate exhaust gases from the engine cylinders at the initial stage. The essence of the work of the "Spider" is a better scavenging and cleaning of the cylinders from exhaust gases due to pressure fluctuations in the exhaust system. To achieve the desired effect in the manufacture of "Spider" pipes of a certain length are used. Moreover, the pipes connected to the block head are installed in the order of engine operation.
Types
Now the market sells "Spider" of two types: 4-1 and 4-2-1. The difference between them comes down to the fact that in the first type, 4 pipes that are connected to the head of the block converge into one pipe, and it is already connected to the catalyst. The "spider" of the second type is different in that its 4 pipes first go into 2 pipes, and those, in turn, into one that is connected to the catalyst. In addition, the internal cavity of the "Spider" does not have the filling that is in the standard collector. This filling ensures compliance with the Euro-3 standard, and it also “presses” the VAZ 2114 engine.
The type of "Spider" also affects the achievement of the desired effect. In order for pressure fluctuations in the exhaust system with type 4-1 to provide good scavenging of the cylinders, the engine speed must be above 6500 rpm. That is, it is advisable to install such a "Spider" only on forced engines that provide high speeds.
Type 4-2-1 allows you to achieve the desired effect even at low speeds, which makes it possible to use them on the VAZ-2114 even without alterations to the power plant.
It should be noted that the Spider itself, installed instead of the standard manifold, will not particularly affect the operation of the engine, it will also require the removal of the catalyst and the installation of a resonator and a direct-flow exhaust system. In general, the entire exhaust system will have to be changed. After such alterations, the VAZ-2114 will not meet any standards, but the car will become more playful. In addition, in the future, it will not be necessary to replace a clogged catalyst, since it simply will not be in the system.
Which Spider is better 4-2-1 or 4-1?
We will try to answer this question.
When tuning the engine, it is very important that the exhaust system of the car is even an integral part of tuning. And then the question arises which spider is better to install in order to get the maximum power flow. In fact, the answer is very simple, that the 4-1 spider, that the 4-2-1 spider are the same in their technical characteristics, although when measured on the stand 4-1 shows a small (insignificant) increase at low speeds, at the top the spiders are exactly the same. So based on that, the answer is this. if the motor is going for low revs, then the spider 4-1 will be a little better, for medium and high revs, you can safely install any of them. Also, keep in mind that installing one spider will give you a slight increase, the exhaust system is tuned in a complex, i.e. the resonator with a silencer will also have to be changed, since it is then that you can get an increase of about 10hp.