|
Ported Intake/TB, Roto fab dry, and secondary cat deletes do not require a tune, but you wont get the full gains of those mods without tuning either. The fuel trims will be off a little(my LTFT were hovering around +7%) but the ECM will correct to some degree so the engine will run fine.
__________________
2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel |