I am in process of trying to do some power mods to mine. I found the ECU programmer on e-bay for $100 so I got it, needless to say I have done ECU first, nice because it gives you the ability to return to stock with just a plug and 5 mins. i was going to try the intake first because of the $$ involved in the exhaust. However you all have brought up a good point obout the exhaust being done first. Do you think incrasing the size to 3inch from the cat back is enough? Would you not still have restriction in the manifolds and upto the cat?