mz6j3y

I believe my shift pressure may be set too high at low torque settings (Low RPM) and it makes a clunk noise when it shifts from 2-3 all of the time when under normal accelleration. This also happens on the 1-2 shift some times under normal accelleration / low torque / rpm. I do not hear or feel any clunk when I accelerate at WOT or less with the converter locked at 3600rpm. I am wondering if somebody could look at my attached tune file and give me any recomondations / analysis.

Thanks in advance, Jason

mz6j3y

I recently purchased HP tuners and am just starting to read up on tuning but am still green when it comes to tuning. This past spring I had an adjustable body mount torque arm and moser 12 bolt installed as well as some other items and a tune. I have had the shift clunk ever since. I have also changed my tranny mount to a poly mount and checked to make sure the torque arm was not hitting anything.

From what I have read up on here, I just kind of wonder if the tuner set the shift pressure at low torque to high. Any help or thoughts would be great.

Thanks,

muayyadf1

You just have to much line pressue, lower 200 ft-lb and less area by 5% and see..

69LT1Bird

iTrader: (1)

Your best bet it to go to the HP tuners repository and download a stock tune like your setup and do a compare. I looked at your tune and compared it to a stock 2002 Camaro and everything is over doubled in pressure.

This was in the transmission - shift properties - shift pressure - normal - base shift pressure versus gear

mz6j3y

Thanks for the replies / information. I will check on the HP Tuners site as well. Sounds like the tuner bumped up the line pressure too much. Does anyone have a screen shot of what settings would be safe?