ya, i was prety sure that there were alot of ppl throwing the kits on, even with out the exhaust to support it. as u said, it would prop def benefit from that aswell, so i can consider that down the line. the only real difference i know of, as far as things id have to change are that it requires premium octane, whereas stock its only reccomended but still safe. here and there i put 89 in it since i do so much highway cruising and am not even in boost anyways, but id go strictly 93 if i go ahead with this mod. but basically, im lookin to get this pcm error fixed first and foremost and i am kinda lookin at it as an opportunity to go ahead and mod it, if im gonna have to throw money into it anyways.