Hey can anyone give me any info on the Misfiring System, its not like i'm gonna put it on my car coz i dun even have a clue what it is, but i've looked all over the internet and couldnt find any info on it.. maybe i have the name wrong or just not looking rite. Anyways its that thing that causes fire to come out the exhaust pipe of rally cars when they're entering and exiting a corner.

:headbng2: thanx guys

 

Some info on the Misfiring System. The Misfiring System only do one thing keep the turbo run went you not gasing your car. Plus the down side to the system is it will f**k up you turbo and your down pipeing. and this system is hard to find. I was thinking about geting the Misfiring System for my Lan-Evo but went i heard about this info, i say for get it

 

wow.... elimates turbo lag completely i assume... interesting... anyone have any specific info on how bad for the car esp. turbo and downpipe it is?

 

It is called an Anti-Lag System (ALS) or Bang-Bang anti-lag system.

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Erik

 

have been in a TME with ALS and launch control running from an Autronics computer. The thing is amazing. It is also loud as hell.

Heard that you have to replace the turbo every 12-18months if you run it all the time. However, there was a switch to turn on the ALS so you don't have to run it all the time.

ALS changes the sound of the car completely. Performance is also something else.

 

hey 3171 can you give me more details? like the exact parts you need to properly run ALS, performance difference and all. thanx!

 

hey is some better info on the misfiring system

When off throttle and over a certain RPM, they are programmed to
dump a lot
of extra fuel and retard the hell out of the timing. This makes big
explosions in the exhaust manifold and spools the turbo to make
boost when
you are off the throttle. Instant boost all the time. Some systems
also use
fresh air injected into the exhaust manifold to help get things
exploding.
The 1G FWD we ran at Pikes Peak in 96 would make 6 psi in the
manifold at
idle. Sounds like ***, kills turbos and exhaust manifolds and makes
it very
disconcerting to lift off the throttle and have the car still
accelerate.

We'll be all standing on the side of a rally stage and a car will
go by with
anti-lag... half of the spectators will comment on the poor guy,
his car is
running so bad. The other half get wood and start thinking about
ways to
make air injection holes in their exhaust manifolds on their street
cars.

 

awesome. so okay, whats the basic setup i need to make on a car to run the system, like what parts, how to tune the comp, any ready made systems out there?

and thanx for all your help guys, starting this thread taught me more bout the system than 4 months on the internet literally

 

Zeroize,
To setup a full anti lag system you will need at least the following,

Some method of controlling the timing and fuelling of your car (programmable ECU)
A method of getting extra air into the exhaust system (either by holding the throttle open using a motor or by dumping the air from the turbo into the exhaust manifold)

There is a basic anti lag setup on the standard Evo 6 but it is not operational.

This uses the secondary air system to provide air into the exhaust manifold when you have been on full throttle for more than 3 seconds and the engine is still above 4,000 rpm.
To get this to become a full anti lag setup what you need to do is to drill out the little jets that are present in the current exhaust manifold inlet ports for the secondary air to make them larger and then re-route the dump valve outlet into this system. You can then run with a programmable ECU to change the fuelling (dumping extra fuel) and the timing (retarding it so that it ignites the mixture when the exhaust valve is open) and that's all you need.

The only downside (as people have pointed out) is that you will need a new turbo and exhasut manifold quite regularly as the maximum exhaust temoeratures exceed 1000 deg C when running this setup.

If you use the anti lag method that holds open the throttle then you will also lose the servo assistance on your brakes because you do not have the necessary vacuum in the inlet plenum chamber to run the servo.
To combat this, you can either run without the servo assistance and modify the brake system to provide better feel or you can run an extra compressor to provide a seperate vacuum system for the brakes. If you use the secondary air system method though, you will still have the assistance because the throttle can remain closed during the use of anti lag and so you still have a vacuum after the throttle but you are generating boost pressure before the throttle body.


Sorry for the long reply but you did ask

Andy

 

no man, thanx for all the details!

 

Geez ...
Hey AndyF_RSX, 4G63_Attack

Preatty good ...
How do u learn that ??
I had run a rally championship it´s because of this i had know about misfiring systems ...
Where have u got so mutch information ??
Are u professionals ?

Misfiring is changes your car ... The exit on the corner increases a lot, making AWD cars a killing machine ( since the grip is stronger in AWD cars ) ... Lancers and Skylines with misfiring make a very very very very good car ...

but the is just for racers ... You can destroy a turbo in 3 or 4 races ... In a Street car it will crash in .. I say .. 3 or 4 weeks, If you get gentle with the car !!! If you put a misfiring sistem you wont take it easy !

 

Lan,
It's just by reading up on various things and getting a understanding of how it works. The Lancer Evolution World Rally Cars run a similar system to I described using the dump valve venting into the exhaust manifold to give the air required for the anti lag setup.

Also, what I forgot ot add to my last post is that there is a way to get anti lag without the need for controlling the ignition timing.
What you can do is get the fuelling really really rich and then use an extra spark plug that is placed into the exhaust manifold to ignite the extra fuel and air. This is a very basic system but will still give some anti-lag effect without the need for a ignition timing module.

Therefore if you have a fuel computer (Apex'i AFC for example), an uprated fuel pump and regulator and a method of igniting the spark plug in the manifold then you can have a cheap version of anti lag but it still wont be good on the turbo and manifold

Andy

 

I have just forget to tell the first felling when I drove a AWD with ALS ...

I started the engine and it sound like hell, It wasnt like that before.

FIRST GEAR

I put my foot in full trottle ...
The car flies and I get stuck in the seat...
Second Gear !!
Sound like hell now .. Really
Third Gear , Fourth ...

CORNER

Entry speed is normal ( I entered in 60 ... 70 mph was my normal ... the car was too weird and i wasnt so confidance WET ), go to full trottle... Result ??? PERFECT Exit Speed ...

get 79 mph in the curve when usually I would get 63 ...
UNBELIAVABLE !!!