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Old 06-29-2006, 09:48 PM   #1
SatanasoSTI
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Default Anti-lag Map question ?

Can someone make a map (AP) for anti-lag be nice if we ca use it I love the sound the rally cars make.
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Old 06-29-2006, 10:41 PM   #2
shikataganai
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how often can you afford to replace your turbo? that said i use FFS and LC on my utec, and both are great fun...
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Old 06-29-2006, 11:15 PM   #3
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sure ill get right on it
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Old 06-29-2006, 11:22 PM   #4
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Quote:
Originally Posted by tzedek
sure ill get right on it
mabe a little harsh, but I'm sure he just wants an example, but I doubt anyone has one.
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Old 06-30-2006, 01:06 PM   #5
Drac9
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AP does not support this functionality. Currently you'd have to go standalone or Utec for that.
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Old 07-01-2006, 12:03 AM   #6
ADR 04STi
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My PDX maps are almost lag free. .about the best youll find. Other than that. . get an NA motor.
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Old 07-01-2006, 05:05 AM   #7
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ADR do you understand what anti-lag is?
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Old 07-20-2006, 12:15 PM   #8
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Satanaso, I am looking into this option as well.

Last edited by thejean; 07-20-2006 at 01:10 PM.
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Old 07-20-2006, 01:25 PM   #9
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If it was as easy as using a certain map, everyone would do it(or maybe I'm missing something and you already knew this?). At the least, you'd probably need to have the throttle body open a given amount(more then normal at no throttle) at all times. Running boost all the time would wear parts, and use gas like it was nothing.

peace

Last edited by hippy; 09-06-2006 at 04:26 PM.
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Old 07-20-2006, 01:53 PM   #10
Leonardo
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and, rally cars have an anti-lag system, not mearly a map. It is complicated but yeah, kills turbos.
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Old 07-21-2006, 12:56 AM   #11
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You guys REALLY need to read up on ALS. So much misleading info in this thread.

And, yes, ALS can be done with a map and a turn of a screw.

G.
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Old 07-21-2006, 02:13 AM   #12
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Anti Lag systems create and explosion in or just after the turbo. This creates a high velocity of gas that spins the turbo (even if past becuase gases are sucked into the explosion). They do this using injectors and/or a spark plug to ignite gases in the exhaust track. Think of it as turning a turbo into a rotary motor. The turbo won't last that long.

In a map they might run the car so rich that extra fuel explodes when it hits the turbo, but this is not a true anti-lag system and can be more destructive.
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Old 07-21-2006, 03:05 AM   #13
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why does it kill the turbo exactly? kills the bearings?
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Old 07-21-2006, 11:04 AM   #14
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Quote:
Originally Posted by hybrid gti 2
why does it kill the turbo exactly? kills the bearings?
Big time heat.
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Old 09-06-2006, 01:18 PM   #15
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Quote:
Originally Posted by Gethin View Post
You guys REALLY need to read up on ALS. So much misleading info in this thread.

And, yes, ALS can be done with a map and a turn of a screw.

G.
I got the map part figured out but what screw are we talking about? Idle control valve or throttle body plate?
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Old 09-06-2006, 01:54 PM   #16
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I found some good info on ALS

http://www.rallycars.com/Cars/bangbang.html
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Old 09-06-2006, 02:16 PM   #17
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ALS does NOT KILL TURBOS. Why this keeps propogating is beyond me.
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Old 09-06-2006, 03:24 PM   #18
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Mild ALS perhaps. Very agressive ALS can be much harder on a turbo though. What I am most concerned about is my EGT probe blowing apart and flying through the turbo. I am catless as well so no worries there.
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Old 09-06-2006, 03:39 PM   #19
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I don't know what you consider mild or agressive but I know of at least one privateer Group N rally team that uses ALS and doesn't chew their VF turbos. Used two turbos in a season because the first was burnt when an oil line came off. I believe there is also more cast iron manifolds cracked than turbos blown from ALS. Certain turbos can take inlet temps very well (IHI comes to mind) while others are good at running without a pressure relief valve so some are cut out for ALS more than others.
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Old 09-06-2006, 03:50 PM   #20
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I agree, ALS success depends largely on the turbo design as well as the agressiveness of the programming (i.e., boosting to 1 psi off throttle vs say 20 psi or something like that).

Related question... what idle speed would result in the throttle body being about 25% open on a stock EJ20?
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Old 09-06-2006, 04:02 PM   #21
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I was talking to one of the VSC guys when Travis Pastrana was at SOS a few weeks ago. They said, even with the anti-lag, their turbos last a whole season as they are tuned more for reliability than peak performance. So I figure a mild ALS set up that can be turned on and off would lead to a decent turbo lifespan.
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Old 09-06-2006, 04:30 PM   #22
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They also use turbos which might cost 5 times more then turbos we use, and are ment to handle the abuse. There are many things people might not think about when they're conceptualizing antilag systems, and many of them can be bad for the longevity of parts. I'm no expert on antilag systesm(I'm a big newbie actually), but one thing that comes to mind is compressor surge. Just a random thought I guess.

peace
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Old 09-06-2006, 05:28 PM   #23
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Quote:
Originally Posted by thejean View Post
I agree, ALS success depends largely on the turbo design as well as the agressiveness of the programming (i.e., boosting to 1 psi off throttle vs say 20 psi or something like that).

Related question... what idle speed would result in the throttle body being about 25% open on a stock EJ20?

About 4,000rpm
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Old 09-06-2006, 06:08 PM   #24
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Quote:
Originally Posted by PaulRex View Post
About 4,000rpm
No way in hell. Put your foot down on the gas 1/4th of the way in neutral and you will see it bounce redline since there is no load on the engine.
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Old 09-06-2006, 06:26 PM   #25
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Yikes, that seems a little high. I wonder if I can get away with less...
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