Just a quick question, does anyone have some sort of guide to how antilag works?

 

Basically your trying to make enough gas in the exhaust to spool the turbo into boost so there is minimal lag when you set off.

Put it simply, the ECU turns the ignition timing about 45 degrees back, so it sparks with the exhaust valves slightly open, then the ECU squirts more fuel into the engine for a bigger bang, the engine fires with the exhaust valves open, causing the turbo to spool up. Which is also why you get fuel igniting in the exhaust

 

Anti lag works on closed throttle situations, (aggressive ALS will run a trailing throttle ALS though)

It works by a valve bypassing air from one side of the throttle body to the other, allowing the engine to rev up as if the throttle was open. The ecu will then cut fuel and ignition in a sequence of which will allow the engine to run but also to ignite excess fuel whilst passing through the engine and ignited in the exhaust manifold. These explosions in the exhaust manifold cause the exhaust wheel of the turbo to be turned, each explosion will obviously work in turn and drive the exhaust wheel hard on each bang.

The more air bypass the more aggressive the ALS can be.

 

Great explanation jimbo!
There is also an system called "egr ALS" (mountunes terrible term)

 

Egr ALS is incredible, we had a wrc escort for a short while with it and the noise was immense, I only recently learnt how it worked (having never worked with it) and the egr term is very misleading!

 

I've read about "EGR" ALS on this very site and to my understanding they just use an EGR valve to pump air directly into the exhaust manifold from the compressor housing of the turbo?

 

Thanks for the explanations. Jimbo, cheers for that. I thouht there was injetor in the exhaustthat injected air to burn any remining fuel in the system at first. But all understood. Cheers

 

ALS is awesome..!!!

 

What is needed to run als?
I've heard of maram shafts,are they essential?

 

the only reason it got that name because it uses a supra EGR valve LOL

 

you just use the egr valve to connect the compressor outlet to the turbine inlet, creating a turbine engine!

 

Depends how agressive you want it mate... Think you can have mild on a normal turbo iirc and just modded throttle bodie..with AL enabled chip/ecu

 

Nearly Correct it takes air from the inlet manifold side into an accumulator and when off throttle solenoids allow the air to be released through the egr valve and into two sides of e manifold, the fresh air reacts with heat and fuel and causes even more aggresive ALS

That's my understanding of it!

 

the storage accumulator is used to store pressure to be able to operate the egr valve

 

+1

 

Ahh of course! The air comes from the link pipe to the aluminium boost pipe!

 

As aggressive as possible!!!

 

It's the only way lol

 

does anyone have pics of the vavle in the throttle body? cheers for the help everyone

 

Don't know if this pic is any good



And this classic clip

 

How mine started

 

Just thought i'd add a few youtube claassics

 

The Audi above isn't using antilag !

 

LC on the audi lol

but the rest is cool lol

 

oh, fair enough, still launches well

 

i want anti lag ant launch control on my saph also want more power... dunno what road to go down tho, either way it will be some shoppin list no doubt

 

the first one to have stus al and lc i believe

 

Is that AL + LC together at once..?

 

not sure matt as it was well before i owned the car but she is pretty fecking loud when firing the lc lol

 

Mine only bangs and flames when the revs come down... How do I get it to go like yours doug that's why I asked the above question mate.

 

i believe the one in the vid above is launch control mat

 

have you just got anti lag fitted matt or do you have launch control as well?i think all launch controls are like mine,or at least i thought so?

 

I have both mate AL + LC

 

ALS works when you are off the throttle
LC works when you are ON the throttle!

 

So will mine work same as above..?? And what will happen of I use both at same time..??

 

i dont see how you can be both ON and OFF the throttle at the same time!

 

i think you LC is not engaging for some reason
you gotta put your foot flat too the floor with it engaged!

 

I've never tried my LC yet that's why I'm only asking to see if mine will do same as the above and spit flames..?... Someone on another thread said switch them both on but I don't want to if your not suppose to lol


Cheers Mat.

 

Matt, if you turn them both one, only one will work at any given time.

LC is when you are stationary, as Gareth says with your foot on the gas and clutch, then when you drop the clutch and go, the next time you lift off the throttle to change gear or coast the ALS will operate to keep the turbo spinning.

so, with your LC do you have to engage it by pressing a button then put your foot on the gas, and release the button once you are moving?

and yes, LC will pop and bang and clatter when in use.

so will ALS LOL

 

The LC on my car works off the handbrake as The button mate...I need to wire it up and try it... Hope it's like dougs....