Just drive it normally and keep an eye on your boost gauge if you have one. Also, if your exhaust is too free flowing and you can't keep boost down, chuck in a piece of steel with some holes drilled in it after the cat. Hell of a lot cheaper than porting your wastegate etc.. Main problem is not enough backpressure to keep the standard wastegate shut. MTQ highly recommends not using the internal gate for anything over 450rwhp on these cars. We got it right the first time and kept boost at a flat 14psi. But in saying that, its up to you what you do. Good luck with the tune! :D