View Full Version : Antilag
I've heard "Antilag2 mentioned around a few times recenty... what exactly is it? Is it as the name suggests a product that you can by which reduces lag on turbo cars?
How does it work?
Also, lag on an Ibiza isn't really noticable... I push the pedal and it goes almost straight away.... is Antilag worth it?
Thanks
Ben
Antilag keeps BIG turbo's spinning....
a) you don't have a big turbo
b) it's a proper mapped ECU job & you loose everything like ABS ESP or whatever.
c) you don't want it.....
Thats what i thought.
Thanks
Ben
"you dont want it"
i dont think your neighbours or your council would let you either!!!
Whys that? Is it loud or something?
If all it does is keeps the tubro running then why would is be loud etc.
That is true.... I'm not sure it's road legal (rally cars use it only on special stages).
You'll have flames out the back you see.
Not sure about noise - but whateve saul says goes (please don't hit me)
chungster
26-01-2002, 12:50
Sorry to correct you mark, but ANTILAG is DEFINITELY ROAD LEGAL.
Ralliart UK fit it to their EVo 7 Extreme S........massive wastegate chatter, huge flames out the back. this is due to them running mega boost on their Extreme S to get that 350bhp.
They also now offer it customers with std Evo's...who want a bit of noise and fire power!!!!! :)
The only downside is MPG....it goes out the window. Their system uses neat fuel being thrown into the turbo to keep it spinning.....and goes straight out the exhaust....thus getting the flames.
antilag might not work on an Ibiza....but you can get flames.
All you need is an extra injector attached to the exhaust.....and away you go!!!
Bugger that.... that sounds dangerous to me!!!!
Still, could be fun if you are stuck at some traffic lights with some nob in a BMW behind you.... lights go green, you put your foot down and... :devil: Roasted BMW! :D
I'll think I'll pass on this mod thanks.
Suprised that its doesn't shag up the turbo!
Also, what happens when the car first starts up and the exhaust is cold? Isn't there a danger of the unburnt fuel building up in the exhaust and then when it finally does get hot enough to ignite.... BANG! Or are the exhaust gases always hot enough even from startup to ignite the fuel?
Technically, injecting fuel into the exhaust for ignition is what an afterburner does on a jet engine!!!! i think they should rebrand it as "Antilag afterburners" :)
Ben
I'm not sure if it can be legal....
In a world where you're not allowed sharp bits of bodywork I can't see that they'd let you roast people.
the antilag flamethrower on the Evo's from Ralliart is switchable (hence possiblity of off road use)
Just cos people have it on their car doesn't mean it's legal to use.
chungster
26-01-2002, 16:38
Switcheable......didn't know that one!
Oh well, as for the roasting.....there's enough over-fuelld RST's around doing afterburner type shananigans...but really am not sure on the legal status of this. Can people sue for damages then if you indeed did roast some bastid sitting behind you at the lights??
And Mark....why are doing that with ya title??
It's funny....but if you're trying to wind me up...I'm way past that!!!
See ya
Lee
PS: How come you're not defending ya AmD stuff, like "197bhp every time" I seem to recall you saying before this RR thingy.
Unburnt fuel into the turbo? Before the CAT?
You'd have to guarantee complete burning of this fuel before it reaches the CAT, otherwise you'll be buying a new CAT before every MoT.
You could run without a CAT but that wouldn't be road legal for new cars?
This is the beautiful thing with the law in our country.
Buy it, fine thats legal, use it, and they'll be down on you quicker than an amsterdam *****.
Its loud as f*ck, spits flames and is generally not too PC for other road users.
Ralliart may well sell it as an option, whether in the small print they write that they have any legal obligation is another!!!
If they banned it on rally stages cos its too loud i cant see your local Charlie Browns passing an MOT with it.
You dont need it anyway, no good on ickle turbos like K-03 or K-04.
All MHO as ever
castlehill
27-01-2002, 00:43
Anti-Lag must be road legal as Rally cars have to be Road Legal IE able to pass an MOT (yes I know they are under 3 years old generally). They in theory would fail scrutineering if anything fitted caused it not to be road legal. Boy Antilag is loud though had a run in Sandy Dalgarno's Group A Escort Cossie a few year back (at the Granit City rally press day) & when I got out he took off in full Anti lag mode left my ears ringing for 6 hours, if memory serves me right there is a switch to turn it on & off at will.
in a fast show style:
SOUNDS OLL BOLLOCKS TO ME
grow up... why spend stacks on an anti lag system on a car with apperently "virtually no lag" if ya don't want lag change gears without taking your foot off the throttle ,sorry can't be a'RSD
to write any more
ibizacupra
27-01-2002, 20:52
I will be building my Scirocco and will have the ability to run antilag as desired. It will run T3, and start with 1bar boost all being well.
the antilag is switchable, so thats simple come road use and MOT's. (unless you fancy frying your local MOT inspector)
:D
Bill
Rally car's must be capable of passing an MOT - so they would just turn the Antilag off right....
they only use it on special stages (which are classed as off road).
Originally posted by castlehill
Anti-Lag must be road legal as Rally cars have to be Road Legal IE able to pass an MOT (yes I know they are under 3 years old generally). They in theory would fail scrutineering if anything fitted caused it not to be road legal. Boy Antilag is loud though had a run in Sandy Dalgarno's Group A Escort Cossie a few year back (at the Granit City rally press day) & when I got out he took off in full Anti lag mode left my ears ringing for 6 hours, if memory serves me right there is a switch to turn it on & off at will.
castlehill
27-01-2002, 21:26
Yep,
That's what they do, doubt it would pass the emmissions test with it on, thats if they didn't melt the sensor & the brave tester first.
Peeps,
This is a similar principle to Post injection on Diesel Engines. You inject a small amount of fuel after the main injection so that a further mini'-explosion occurs on the exhaust stroke hence keeping the turbo spinning.
On Petrol engines (Rally cars), the following happens:-
When you lift your foot from the accelerator, the ignition timing is retarded (anything up to 40°) and the intake air and fuel supply mixture is made richer. This results in air/fuel mixture in combustion chamber when the you lift off the accelerator. Due to the ratarded ignition, the air/fuel mixture reaches the exhaust mostly unburned.
When the spark plug fires, the exhaust valve starts to open due to the ignition delay mentioned above. As the exhaust temperature is also high, the unburned fuel explodes upon contact with the exhaust. As the Turbo sits right in this path, the explosion keeps it turning, where as it would normally slowdown due to the exhaust gases, being cut-off (under compression stroke).
Hope that makes sense. Tell me if i'm talkin' bo*/*cks
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