Need help deciding on a tuning solution
Thanks,
Bill
with the '04 GTO tune file in your 5.3. I doubt there'd be much to change.
One thing to be careful about is the IFR table as the earlier truck engines (pre-2004) had a return fuel line, so the Injector Flow Rate table was different to the cars and 2004-on trucks. If your's has this earlier set-up with a return fuel line to the tank you will need to ensure the correct IFR is transferred to the GTO tune.
Last edited by Sid447; May 15, 2011 at 02:29 PM.


