Okay, among other things, I ordered an o/r h-pipe, dual exhaust, and tuner. Well, the tuner and duals have arrived, but the h-pipe is still in the mail, and I can't throw it on until next weekend since I'm at college during the week. The tuner is tuned for a 2.5" o/r h-pipe and 2.5" duals; will it hurt anything to run the tuner with the stock y-pipe and single exhaust until I get the duals and h-pipe on?

 

i dont think its going to hurt anything but its probably not going to do much anyways, if you have an auto id just leave everything 100% stock and just go into the customize mode and just play with the tranny and shift points and leave the actual tuning out till the exhaust is installed

 

As long as it's not going to hurt anything... I have the 91 octane performance tune, so it might help a little bit even with the stock exhaust (I need to fill up my tank anyway). But yeah, I have a manual so I really can't play with the shift points. Can't wait to get the duals on though