How do I log torque?

[strider]

I would like to log my torque to help with adjusting some of the shift tables based on torque. I also would like to know what kind of torque I am getting out of the car at high end. If the engine is using torque readings how do I get them to show up on the scanner?

[redhardsupra]

there are torque PIDS, one for engine and one for trans. I think they're calculated based on load and values for a stock stall, so if you dont have a stock stall you're gonna be off.

i like to use dynamic cylinder air for a torque measurement. amount of air in cylinder determines compression, and compression determines torque, thus dyncylair is a good relative indicator.

[uelundgren]

I can't find any torque PID's for the Vortec 4200 LL8 I6 in the Saab 9-7X 4.2i. Any ideas where to find them?

[ds8]

There is a PID for my '04 4.2L named GM.TRQENG_B that logs engine torque delivered to the engine. My max value is 112 ft-lbs. I posted a message about this in the I6 engine tuning section. If you get your PID to work, I'd like to know what your max value is.

DS

[gman4dx266]

Ive seen 334ft. lb. on my stock v6. So, sure id like to know how to get something accurate too.

[Bill@HPTuners]

I can't find any torque PID's for the Vortec 4200 LL8 I6 in the Saab 9-7X 4.2i. Any ideas where to find them?

if you post your stock file I could probably tell you where in the scanner it is.

[uelundgren]

Ok, here's the stock file.

[Vbb1994]

if you post your stock file I could probably tell you where in the scanner it is.

I hate to resurrect an old thread, but im kind of in the same boat and honestly wondering, why isnt there a Torque PID for the P10? i know its old 02-05 stuff, but people still play with them and theres an aftermarket community thats upcoming and rising using the 4200 and p10/p12/e67

i myself have an LL8 and would like to make adjustments to my shift firmness, timing, and such, as well as the torque management to keep the 4L60e happy....
but i cant, because theres no Torque PID for the p10.

the closest thing i see is volumetric efficiency airflow, which is outputted in lb/min or what have you. perhaps you could come up with some rough numbers with that.. but otherwise how does the PCM know the torque to shift the transmission??

i can gladly share my .hpt file, or whatever

[Vbb1994]

I take it nobody will be answering this one anytime soon.