Hey guys, I have a 97 turbo gt with a 4t65e out of a 01 regal gs. I took a gamble on it as it came from the junk yard. It had a fair amount of clutch material in the pan but didn't look too bad. I don't know mileage due to the digital odometer. I put in a 300m input shaft, 2.93 7/8 chain set, hardened 4th, new pcs, tcc solenoid, and a transgo shift kit. It was good for about a week then I started to get a slip/bang when taking off from a stop above 1/3 throttle. It doesn't rev high, only a few hundred rpm then it grabs. If I take off easy it operates normally. If I shift it down to manual 1st it takes off normally.
After some research I'm leaning toward a worn input clutch apply piston. I have read of one person, Jdmgtp, who was able to adjust the force motor current table in tiny tuner to correct the problem. I'm not sure how long it lasted but I figure it is worth a try. He said he lowered the commanded voltage at 0 psi for all temps. My questions are has anyone else tried this with any success? If so, how much did you lower the voltage? I was thinking 10-15%. Also is the 0 row the only one I should alter?
Right now my trans tune is based off of a stock 01 regal gs bin with some minor changes to torque management, shift points, shift time, etc. I'm working with Dhp and tiny tuner.