Anti Lag System
12 May 2004, 03:41 PM
#1
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Anti Lag System
Is it possible to buy off the shelf some system to remove turbo lag. I've heard of an EVO that has an anti-lag system that keeps the turbo spinning between gear changes. I'm more curious than anything. Any info good/bad would be appreciated.
Please keep any info spelt out very clearly. I'm certianly not the most technical of people!
Please keep any info spelt out very clearly. I'm certianly not the most technical of people!
12 May 2004, 03:47 PM
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In a nutshell yes....
However it will cost you lots of money & eat your turbo
So unless you can live with thatjust rev it a bit more in each gear so you don't come off boost between gear changes
However it will cost you lots of money & eat your turbo
So unless you can live with thatjust rev it a bit more in each gear so you don't come off boost between gear changes
12 May 2004, 04:34 PM
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Originally Posted by MadMark
Talk to G-Force Motorsport in Aylesbury, but bank on the odd new turbo ...
12 May 2004, 04:37 PM
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The rally car day last year at Castle Combe had some anti-lagg ecu tuners..
Go along and ask them what's the pro's and con's
(I have heard it kills the turbo)
Go along and ask them what's the pro's and con's
(I have heard it kills the turbo)
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but your turbo will glow cherry red 
13 May 2004, 09:00 AM
#13
Depends on the system, but for everyday driving it won't really help.
Anti lag is to keep the turbo spinning while you are off the throttle, so when you come back on you have instant response. What it doesn't do is keep the turbo spinning while allowing you 15psi boost while you are pootling around at 1500rpm. the main reason is the system normally screws with ignition timing so you ignite the inlet change as it exits the exhaust ports, rather than in the cylinder. Great for turbo spinning, not great for normal power.
If set up properly, it should have a time limit so it's not on for ages at a time, 4 seconds should be enough (4 seconds continuously on). It puts great strain on the exhaust valves, exhaust manifold, and the turbo exhaust housing. But used in moderation it can be useful.
The EVO system also has an auxilary air feed to the exhaust manifold, but it's only a token effort, and not enough for full on ALS. The WRC cars use a vacuum operated valve to feed fresh air into the manifold, this lowers the temperature of the ex gas while maintaining high gas speed.
Paul
Anti lag is to keep the turbo spinning while you are off the throttle, so when you come back on you have instant response. What it doesn't do is keep the turbo spinning while allowing you 15psi boost while you are pootling around at 1500rpm. the main reason is the system normally screws with ignition timing so you ignite the inlet change as it exits the exhaust ports, rather than in the cylinder. Great for turbo spinning, not great for normal power.
If set up properly, it should have a time limit so it's not on for ages at a time, 4 seconds should be enough (4 seconds continuously on). It puts great strain on the exhaust valves, exhaust manifold, and the turbo exhaust housing. But used in moderation it can be useful.
The EVO system also has an auxilary air feed to the exhaust manifold, but it's only a token effort, and not enough for full on ALS. The WRC cars use a vacuum operated valve to feed fresh air into the manifold, this lowers the temperature of the ex gas while maintaining high gas speed.
Paul
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