Tuning a 5.3 06 Sierra that has been swapped to a 6.0. Got a donor stock file with matching OS & copied over all the 6.0 values EXCEPT the desired throttle area because I was scared of bricking the PCM. The truck is going on cruise at idle while driving & is pushing through the converter in drive. The trucks only mods are LT headers, a CAI, & 3200 stall converter so I wouldn't think idle tuning would be a big deal unless I need to change the desired throttle area to the 6.0 values. Any advice?
99 T/A WS6, original LS1 turbo
Without changing desired throttle area, If its DBW you can reduce Idle Airflow or play with ETC Area Scalar. I've changed the desired throttle area values by 5-8% without problems , but I would never touch the 0 or 100 values on either end of the table, I only made small changes to smooth out the curve.
Last edited by nkautz; 04-18-2015 at 04:19 AM.
2001 Z06 : 856/830 : Built LQ9 403ci : D1SC 17psi : Self-built , self-tuned.
Thank you for the advice, guess I'll keep looking at alternatives to altering the desired throttle area. What do you think about reducing the throttle cracker values as well? What I can't get over is why idle is so hard to get right with a stock cam running stock idle values.Originally Posted by nkautz
Last edited by WS6HUMMER; 04-18-2015 at 02:40 PM.
99 T/A WS6, original LS1 turbo
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