It's no secret that the internal combustion engine has a very low efficiency (gasoline is around 25%, diesel can be pumped up to 40 - 50%). There’s nothing to be done, but these motors are essentially last century (I think electric cars are just around the corner). The matter can be corrected with all sorts of modifications, for example, installing a turbine, lightening the design of the pistons, crankshaft, etc. Refinement of intake and exhaust systems. This is exactly the issue that many tuners are currently struggling with, because in the right hands you can actually remove up to 10% of the power. But how does this happen? Some people think that it is enough to install the so-called “spider” according to the formula 4-2-1 or 4-1 and that’s ALL! BUT what is this anyway? What spiders, what formulas - what it gives and how it is configured. Read on and you will understand everything...
Let's start with the fact that any engine has an intake and exhaust manifold . It is clear that the fuel mixture (air + gasoline) enters through the “intake”, and exhaust gases (burned in the combustion chamber) leave through the “exhaust”. So, if you make the exhaust system as unobstructed as possible, you can achieve a slight increase in power.
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Comments 31
just buy the insert 4-1
If you are going to install a spider 4-2-1 or 4-1, then either one needs to be flashed. you need to choose between these spiders based on your goals and future plans. Spider 4-2-1 opens without engine running. If you install it, you will also have to install the middle part of the stinger, since the standard part from the Priora will not fit, and also take a lambda wire extension. Spider 4-1 gives good performance of the engine and you just install it in place of the catalytic converter and that’s it.
I installed the “Subaru sound” spider, a funny thing))) the spiders won’t do any good on the stock engine... but the “Subaru sound” spider at least makes a pleasant sound))) and it’s a mindless waste of money))))
I'm selling my sedan exhaust. Spider 4-2-1, resonator and can.
STT 4-2-1 is not a catalyst insert, but a spider for 1 sensor
IMHO this is all a placebo effect and almost all of these cooperative spiders have a wave-like deformation on the bends of the pipes, which completely eliminates all the difference... sho 4-1, sho 4-2-1... at least 4-4... all the income from them is due to the larger passage cross-sections compared to the cat collector. Expect a special arrival on a Priora with a stock engine from a 2000 manifold... I think it’s the same as believing in Santa Claus and writing to him every year to give him a Maybach for a poem. I personally would just take a stainless steel with a large cross-section and not worry)
Every owner of a domestic Lada Priora strives to improve their car not only externally, but also to increase engine power, reduce noise in the cabin and make it more maneuverable on the road. The exhaust gas exhaust system on the VAZ 2170 also needs to be modernized, since the standard exhaust manifold removes exhaust gases with a slight delay, which “presses” the engine, depriving it of the ability to operate at full power. Installing a spider on the Lada Priora helps solve this problem.
However, there are cases when car owners also note negative factors that arise after installing the spider. In order to understand the need to modernize the exhaust system of the Lada Priora, it is necessary to understand its structure, operating principle and measures to improve its functionality.
Communities › Lada Priora Club › Blog › Questions about the spider.
Hello everyone. I want to install this device, but I don’t know whether to install 4-1 or 4-2-1, I have the following questions: it is necessary to change the entire release, because will the stock one with the spider ring? If you install a spider, is it necessary to flash it, or can you leave two lambdas and everything will be ok without flashing? Since the car is under warranty, but the exhaust system has a one-year warranty, but it has already expired, then the question is about the controller - if you flash it, will the entire engine be out of warranty or what?
Comments 41
I've read it more than once)
I saw somewhere that you can order the entire exhaust for a Priora for 9 thousand, and they say you won’t need to cook anything there. Is it possible? And approximately how much will a complete replacement cost?
It’s quite possible even cheaper, but I don’t know about the cost of replacement in the service, I would change everything myself)
I saw somewhere that you can order the entire exhaust for a Priora for 9 thousand, and they say you won’t need to cook anything there. Is it possible? And approximately how much will a complete replacement cost?
Look at the website ladaprioratuning.ru for example.
When a spider or insert for 2 sensors, the 2nd with a blende, this blende covers the internal cross-section of the pipe by almost half. Do you need it? I had to cut off this blende by welding and install one plug. One sensor in operation.
I installed the spider 4-2-1 throttle 56, the firmware for the whole thing arrived! You'll lose your warranty, just give them a reason!) It will ring if you install a spider, a direct-flow center (without a resonator) and a drain can (muffler), this exhaust configuration has been tested on yourself! Rings after 3000.
I installed the spider 4-1, I didn’t flash the car, it picks up more energy at high speeds, I recommend using two sensors
4-2-1, there is also one for 2 sensors, but it makes no sense. Stands with the stock can, nothing rings. The firmware was sewn for me directly from the officials, so it did not affect the warranty; there will definitely not be a warranty on the release, since it is not factory-made. You won’t fall into the engine because of the firmware, but because of the spider... if it doesn’t cause the engine to break, then not either. I came for maintenance, under warranty, a couple of times, no one even looked at the spider, they just asked how it was going and that’s all. Spur...a controversial thing, it increases responsiveness, gas sensitivity for those who are lazy to press the slipper, the effect from it is rather far-fetched, like from additives in the box, for example, but this is just my opinion, maybe someone likes it.
I also installed the Stinger 421, welded to the original cutter, and flashed the firmware from Paulis (although the flashers in Krasnodar said that this was nonsense firmware) + installed a checker for the electronic gas pedal "Spur" the car moved at least a little.
Review of the exhaust system of Lada Priora
The exhaust gas exhaust system on the Lada Priora performs the following functions:
- exhaust gas removal;
- noise reduction when the engine is running;
- neutralization of toxic hazardous substances in exhaust gases.
The basis of the Priora exhaust system includes:
- 1. Exhaust manifold with converter;
- 2. Resonator;
- 3. Main muffler;
- 4. Auxiliary muffler;
- 5. Connecting pipes.
Exhaust on Priora
The manifold is used to remove exhaust gases from the cylinders into the exhaust pipe. The tightness of the connections is ensured by sealing with a metal gasket in two layers between the block head and the exhaust manifold. The attachment of the exhaust manifold to the cylinder head on one side goes into connection with the converter on the other. The collector and converter connected into one unit make it possible to reduce the warm-up time to the operating temperature of the latter, which significantly increases the efficiency of the converter.
Installation of oxygen concentration sensors at the inlet and outlet of the converter ensures constant monitoring of the quality of exhaust gases. The connection between the intake pipe and the manifold has a heat-resistant seal in the form of a metal-asbestos gasket. And the metal compensator connecting the additional muffler with the exhaust pipe serves as a vibration damper from the engine to the body and the entire exhaust system.
The exhaust gas exhaust system is connected by attaching it to the body brackets using 4 rubber rings. On the main muffler, the suspension cushion has a reinforced structure, which is due to the increased load on it.
What is a “spider” for Priora and what is it for?
Tuning the exhaust system of the Lada Priora includes replacing the exhaust manifold with a similar sports version, which is called the “spider”. The main difference between the original manifold and the spider is that the latter has a larger diameter and the same length of outlet pipes, which facilitates the rapid release of exhaust gases from the cylinders to the exhaust pipe.
This spider design prevents exhaust gases from flowing back into the combustion chamber, which increases engine power and performance. In addition, the manifold performs the function of purging the combustion chamber and filling it with a combustible mixture due to the pressure that is created when exhaust gases are released.
Stinger exhaust kit
To tune the Priora exhaust system, a ready-made kit for installing a direct-flow Stinger exhaust with additional components that are perfectly attached to each other is often used. As a rule, the tuning kit includes the following parts:
- new muffler with nozzle;
- spider;
- resonator Stinger Sport with a pipe diameter of 51mm.
The need to install a “spider” on Priora arises when:
- long vehicle acceleration time;
- low engine power;
- failure of the old exhaust system, where installing a spider on a Priora is considered as an alternative to the old one.
On the tuning parts market there are many modifications of “spiders” made by different manufacturers. Some models are produced without oxygen sensors, which requires reflashing the electronic engine control unit.
There are spiders with long and short pipes, which are indicated by the corresponding numbers 4-2-1 and 4-1. These designations reflect the shape of the spider pipes, that is, 4 pipes merge into 2, and then into 1, in the second option, respectively, 4 pipes are immediately combined into one, which significantly reduces the length.
The most popular among car enthusiasts has become the long spider 4-2-1, which, unlike the short one, shows good results in a wide speed range. A short spider 4-1 is better suited for forced engines operating at 6-10 thousand rpm.
Lada Priora Sedan SE [189] › Logbook › Spider 4-2-1+Chip
Whats up all. He promised not to disappear and to write everything that happens to Priorik, but he got tired again. I will restore the chronology of events in order
