i just started tuning this 2004 gmc 5.3 and so far i tuned the maf tables by following a tutorial on youtube
i added 1deg of timing onto the high octane table and it started getting some KR on just one deg added
wondering what could i change so i dont get KR and how can i tune the transmission to go to first gear because my shifter cable is messed up and wont allow me to go park or 1st gear i would like to be able to press the tow haul button so it drops to first and do a 30 roll
TRUCK is mainly stock just added a intake
Transmission is a 4l60 4x4
any help is greatly appreciated 2004 Gmc Sierra Timing tune 1 base set up.hptTiming log 1.hpl