Whats up guys just had a few questions. i got an 06 coupe auto with the z tube and k&n drop in and clear corners. i was just wondering what is the next best mod for performance for less than about 350. i heard about the md spacer or a y pipe is a good idea. not sure what the "rev up" means. so if anyone can list their opinion of the next few mods they would do that would be great.

 

You have a non revup engine all 5AT g35s are non revup and 05+ 6MT have the revup engine has added hp 298 and 260tq instead of 280hp and 270tq with the 5AT. I've heard nothing but great things about the MD spacer 1/2 or 5/16 I personally don't have a spacer I have an APS Tall Boy and love it