Anti Abuse limiter
Thread Starter
Instructor
Joined: Apr 2007
Posts: 208
Likes: 0
From: Joliet ILLINOIS
Anti Abuse limiter
Is the computer programed with an anti abuse limiter off the line...My car runs great but I heard somewere that there is a limiter that does not let you spin the tires when taking off from a stop....Is this right...Because my car is slow off the line....
Racer
Joined: Mar 2005
Posts: 393
Likes: 3
From: Dallas, TX
its called traction control, theres a button that turns it off, look through your manual and it will probably tell you not to turn it off, go on ahead and turn it off, and have fun also if you have a manual you may think about disconnecting the CAGS.
-alex
-alex
Thread Starter
Instructor
Joined: Apr 2007
Posts: 208
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From: Joliet ILLINOIS
I know about the traction control already....I have read somewere that on a 2000 corvette there is some kind of management system not to allow the tires to spin called anti abuse programmed in the pcm.....Could someone tell me about this.
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
There is a function ... if you have an automatic ... called Torque Management that the PCM uses to help your transmission last longer (as far as I know all C5 models with auto tranny have it - not just a 2000). It does this by retarding timing to reduce engine torque and can even turn off injectors if the PCM decides the manuever is "abusive".
It is commonly invoked at upshifts of an automatic tranny to both prolong tranny life and to make for a "smoother" feeling shift. It is also invoked by "heavy" acceleration from a standing start. Finally, it also comes into play if you do something like shifting into gear at high throttle angles, or shifting between D and R to "rock" the car out of snow or dirt.
It is commonly invoked at upshifts of an automatic tranny to both prolong tranny life and to make for a "smoother" feeling shift. It is also invoked by "heavy" acceleration from a standing start. Finally, it also comes into play if you do something like shifting into gear at high throttle angles, or shifting between D and R to "rock" the car out of snow or dirt.
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Burning Brakes
Joined: Jan 2004
Posts: 1,158
Likes: 6
From: Winter Springs Fla
Take it to a tuner and have a performance dyno tune done .
The car will run stronger and they will adjust that as well .
A 2000 auto also has a 70% wot setting from the factory , that will also be address by the tuner .
The car will run stronger and they will adjust that as well .
A 2000 auto also has a 70% wot setting from the factory , that will also be address by the tuner .
Burning Brakes
Joined: Aug 2007
Posts: 1,128
Likes: 5
From: Chicago IL
There is a function ... if you have an automatic ... called Torque Management that the PCM uses to help your transmission last longer (as far as I know all C5 models with auto tranny have it - not just a 2000). It does this by retarding timing to reduce engine torque and can even turn off injectors if the PCM decides the manuever is "abusive".
It is commonly invoked at upshifts of an automatic tranny to both prolong tranny life and to make for a "smoother" feeling shift. It is also invoked by "heavy" acceleration from a standing start. Finally, it also comes into play if you do something like shifting into gear at high throttle angles, or shifting between D and R to "rock" the car out of snow or dirt.
It is commonly invoked at upshifts of an automatic tranny to both prolong tranny life and to make for a "smoother" feeling shift. It is also invoked by "heavy" acceleration from a standing start. Finally, it also comes into play if you do something like shifting into gear at high throttle angles, or shifting between D and R to "rock" the car out of snow or dirt.
i have a 97 a4 will the same apply?? What would be the best and the least expensive way to change it??
Burning Brakes
Joined: Aug 2007
Posts: 1,128
Likes: 5
From: Chicago IL
Burning Brakes
Joined: Feb 2005
Posts: 1,190
Likes: 0
From: Fayetteville AR
Perhaps he is saying GM left 30% more throttle on the table that a good tuner can get out of your car? I know some members were able to squeeze out an extra 10hp on stock c5 with a good tuner.
Burning Brakes
Joined: Jan 2004
Posts: 1,158
Likes: 6
From: Winter Springs Fla
Exactly .
My car stock actualy picked up 32 whp with just a G&S duel k&n air filter and a dyno tune .
Thread Starter
Instructor
Joined: Apr 2007
Posts: 208
Likes: 0
From: Joliet ILLINOIS
I called a tuner and he said that he could do all this and dyno the car for me for 250bucks.... Also adjust anything else I want....But I need to ask why would gm do both...Like traction control and also limit you off the line?????????????
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
TC is meant to help in situations where you have lost traction of one or both rear tires ....
TM is a function to protect the driveline from excessive internal forces ... ESPECIALLY when the rear tires are getting GOOD TRACTION.
TM is invoked all the time in your car .... but you usually can't feel it because it is only there for a split second. Example ... you drive gently away from a light, car is still in 1st gear, and you open the throttle to about 50 percent. At the moment the PCM commands the tranny to shift into 2nd, the PCM uses TM to lower engine output by retarding timing, and then increases output to previous level as soon as the tranny is in 2nd. This makes for smoother "feeling" shifts to you and your passenger (you don't get that head-snap feeling), and reduces internal forces in the gearbox as it is shifting.
Kinda think of TM and TC as covering your butt both when the tires have grip, and when they don't. If you wanna tune out TM, understand the "downsides" (depending on your point of view
) you have an increased risk of driveline failure, and the vehicle may feel more "harsh" under heavy throttle shifting.