I have a 2006 Hummer H2 with 6.0L LQ4 block, LS1B in my tuner selection. I have installed a new timing chain
and I advanced the camshaft position 2 degrees, equals 4 degrees crank advance, to get more low end power.
What modifications to my tune do I need to accomplish to make this work as good as it can?
Thankyou for any professional help.......