Hey guys!
Long time lurker here
To start off i own a 2008 Chevrolet Lumina SS (Holden Commodore VE SS or Pontiac G8 GT us version) and my car is equipped with the auto 4 speed m32 4L65e trans. The PCM is already tuned by my friend and we didnt touch the TCM coz none of has any knowledge on how to do so. My main concern is when the car shifts from 1st to 2nd and 2nd to 3rd the car dies (stalls) and rebuilds power gradually after and i feel that the shifts are kinda sloppy. So from my understanding and reading its all about torque management.
My question is can i modify the TM for the Sport Shift mode (Sport shift button next to the gearknob) and keep the normal shift stock? i think it has to do with Pattern X or Y or Z in HPT.
Ive read the guide written by CoolAid on how to tune the 4L60/65/70E trans.
and followed his TM steps and went ahead and lowered the torque reduction by 50% on pattern X. same thing applied to Abuse mode torque reduction. Also under the Abuse mode reduction duration i also lowered all 1 values by 50%.
Hope someone with good knowledge can steer me into the right direction
I attached a pic with the modifications done for the trans TM. And uploaded my both my modified TM and non modified TM tunes in the my third post.
Thanks in advance
Mario