Calling all SRT Race ECU owners...
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From: Dallas
Calling all SRT Race ECU owners...
Alright, this is the damnedest thing. I have a question for you.
When I put my tranny in "manual" and floor it from a dead stop I will get a slight chirp of the tires; however, if I leave it in "Drive" my car's back end breaks loose and won't stay entirely straight. This is all in dry weather. There is a HUGE difference in power.
Is this normal for you guys or do you think I have a unique situation. I'm highly puzzled.
When I put my tranny in "manual" and floor it from a dead stop I will get a slight chirp of the tires; however, if I leave it in "Drive" my car's back end breaks loose and won't stay entirely straight. This is all in dry weather. There is a HUGE difference in power.
Is this normal for you guys or do you think I have a unique situation. I'm highly puzzled.
Last edited by fever; Sep 10, 2002 at 10:25 PM.
Lexus Test Driver
Joined: Feb 2001
Posts: 851
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From: Texas
Never noticed that problem
Hey fever – did you get any helpful info from Mo at SRT? I’ve come to believe that the numbers I got weren’t good ones so I tried to dyno again at Dallas Mustang last Friday but their dyno computer died while I was on the rollers. Anyway, I’ll let you know when I get another “opinion”. Probably be in 2 weeks before I can try again.
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From: ATL
Re: Calling all SRT Race ECU owners...
Originally posted by fever
Alright, this is the damnedest thing. I have a question for you.
When I put my tranny in "manual" and floor it from a dead stop I will get a slight chirp of the tires; however, if I leave it in "Drive" my car's back end breaks loose and won't stay entirely straight. This is all in dry weather. There is a HUGE difference in power.
Is this normal for you guys or do you think I have a unique situation. I'm highly puzzled.
Alright, this is the damnedest thing. I have a question for you.
When I put my tranny in "manual" and floor it from a dead stop I will get a slight chirp of the tires; however, if I leave it in "Drive" my car's back end breaks loose and won't stay entirely straight. This is all in dry weather. There is a HUGE difference in power.
Is this normal for you guys or do you think I have a unique situation. I'm highly puzzled.
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From: Dallas
Garnet, sorry to hear about the unsuccessful dyno. To answer your question, Mo swapped out my chip and the car feels much more responsive. To be fair, I put a new filter in as well but before I did the filter swap I put in the new Race ECU and it felt better. I don't have that nasty bog anymore.
I employ you guys to do your own test, launch in "manual" 2 and once in "drive". I would like to hear if your results are similar.
I employ you guys to do your own test, launch in "manual" 2 and once in "drive". I would like to hear if your results are similar.
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Re: Re: Calling all SRT Race ECU owners...
Even in "manual" mode, the car still starts from 1st gear. The tranny ECU did the 1st->2nd shift for you automatically.
The only difference I know between "manual" and "drive" mode is "manual" automatically puts the tranny into "power"mode. But that should only affect the shift point not at start up. So I'm confused too
The only difference I know between "manual" and "drive" mode is "manual" automatically puts the tranny into "power"mode. But that should only affect the shift point not at start up. So I'm confused too
Originally posted by mumbles
I wonder if putting it in "manual" blocks out 1st gear? When you e-shift, the lowest you can go is e2, so it's actually like starting out in second gear which would greatly reduce the torque to the rear wheels. Putting it in "Drive" allows the tranny to drop all the way down to first gear increasing the torque to the rear wheels causing you to lose traction. Just a guess.
I wonder if putting it in "manual" blocks out 1st gear? When you e-shift, the lowest you can go is e2, so it's actually like starting out in second gear which would greatly reduce the torque to the rear wheels. Putting it in "Drive" allows the tranny to drop all the way down to first gear increasing the torque to the rear wheels causing you to lose traction. Just a guess.
Lexus Test Driver
Joined: Nov 2001
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From: Texas
Re: Re: Calling all SRT Race ECU owners...
Originally posted by mumbles
I wonder if putting it in "manual" blocks out 1st gear? When you e-shift, the lowest you can go is e2, so it's actually like starting out in second gear which would greatly reduce the torque to the rear wheels. Putting it in "Drive" allows the tranny to drop all the way down to first gear increasing the torque to the rear wheels causing you to lose traction. Just a guess.
I wonder if putting it in "manual" blocks out 1st gear? When you e-shift, the lowest you can go is e2, so it's actually like starting out in second gear which would greatly reduce the torque to the rear wheels. Putting it in "Drive" allows the tranny to drop all the way down to first gear increasing the torque to the rear wheels causing you to lose traction. Just a guess.
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From: Dallas
I agree that it is in first gear but my results are drastically different. The next meet we have I want any of you guys to drive my car to see for yourself: garnet, jacob, tiny, marcus...
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Is SRT offering an Race ECU now?
I an new to the Lexus Community. I just bought a bone stock 99 GS4 . Trying to decide what is the best intake . Is SRT offering a newer ECU upgrade with their intakes?
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