04 5.3 i want to delete maf,can i just change to the new os without enabling codes and ses off?i keep getting old posts and everyone pretty much is doing boost.....i want stock cl/sd on stock tune other than throw a couple degrees timing and a little fuel at higher revs for some "butt dyno" feel, will i need to change the hi-low octane tables and trans stuff?fairly new to tuning and havent ran across this yet so sorry for newb ??s