Roll Racing with A4?
11-21-2008, 07:01 PM
#21
roll races with a stock stall isnt optimal. though i think manually shifting does help you do tend to hit the revlimiter and its probably not good for your trans.
if youre into roll racing and shifting your trans get a trans go. major difference in how you hit shifts and alot more fun to drive.
if youre into roll racing and shifting your trans get a trans go. major difference in how you hit shifts and alot more fun to drive.
11-23-2008, 03:58 AM
#22
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but another question if i do tune it to shift higher and stiffer while this eventually damage the tranny badly or no?
Hope this helps you too,
joecar states:
Making the shifts firmer than stock is good, it won't have any negative side effects, won't cause more wear (will cause less), and won't damage anything ("firm" not "harsh/hard".
You increase firmness by editing the following:
- increasing the shift pressure tables,
- decreasing the shift times tables,
- decreasing the shift torque reduction tables.
If you're also tuning the motor, keep in mind these 2 things:
- those tables are indexed by calculated engine torque,
- the base/running pressure is calculated based on calculated engine torque ;
the PCM calculates engine torque (GM.TRQENG) from cylinder airmass which it computes from either of MAF or VE;
if your tuning the VE/MAF tables, keep an eye on the PCM's calculated engine torque and the various air pids (g/cyl and g/s);
if these go low (because the VE/MAF is heading downward by error), then the running/shift pressures will be low and the trans will slip which will cause damage.
You increase firmness by editing the following:
- increasing the shift pressure tables,
- decreasing the shift times tables,
- decreasing the shift torque reduction tables.
If you're also tuning the motor, keep in mind these 2 things:
- those tables are indexed by calculated engine torque,
- the base/running pressure is calculated based on calculated engine torque ;
the PCM calculates engine torque (GM.TRQENG) from cylinder airmass which it computes from either of MAF or VE;
if your tuning the VE/MAF tables, keep an eye on the PCM's calculated engine torque and the various air pids (g/cyl and g/s);
if these go low (because the VE/MAF is heading downward by error), then the running/shift pressures will be low and the trans will slip which will cause damage.
Damn divorce may have me walking in em again for a little while but I" get past it
11-26-2008, 07:23 PM
#25
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its simple, if you want to roll race get an m6! you'll learn fast autos, expecially stalled autos suck *** from a roll. with two similar modded cars, one being an auto, and the other being an m6, the m6 will always win from a roll. if you want to go fast in a quater then get a built and stalled auto. autos eat a lot of hp, and a stall eats a lot more!
