good choice on getting a tuned PCM with the VATS turned off. NP will do a hotrod tune for a very good price. Tell them what you want turned off like rear 02s and they'll take care of it. Later, if you want a real tune they will discount the price of the full tune. Just go for the full blown tune and be done with it and you get lifetime updates as long as you don't go full on rediculous with engine mods like FI.