I am new to this forum and just started working with EFILIVE this weekend. I am trying to tune my 2004 GMC Envoy XL (5.3L 4x4) for better towing. My goal is to reduce shift times and firm the shifts up a little. I am most concerned about the 1-2 shift.
I started by following Joecar's tutorital. I increased line pressures by 10%, reduced torque reduction 10%, and changed desired shift times to 0.3 seconds. This gave very little improvement in shift quality and WOT 1-2 shift times of 0.5 seconds.
I tried several other things to improve the shifts to no avail. On my latest attemp I removed all torque reduction (set table to all zeros), removed abuse management, set desired shift times to 0.2 seconds, and bumped line pressures by 30%. I logged spark reduction due to torque management, engine and delivered torque to ensure I removed all torque management. I then logged line pressure, rpm, and speed. At WOT the 1-2 shift took 1.0 seconds and was not firm. 2-3 shifts were improved. Line pressure during the shift was 90 psi (I have the log but do not know how to post it).
I know I want to leave torque management in, but I want the shift times around 0.3 to 0.5 seconds. What else can I try to get the desired results?
Any suggestions would be greatly appreciated.