throttle responce is 10 times better , pulls ALOT HARDER and I swear my boost gauge is going over 9 lbs with only a 8lbs pulley and no powerpipe now ..... had it sitting at home for 3 months and just put it on day before yesterday when I got my car back from getting the TSB on the tranny done and the centerforce clutch and aluminum driveshaft put it , man what a different car to drive now ...Air/fuel ratio was 11.1 and Tim from modularpowerhouse told me he tuned it that way so when I put the plenum and TB on it would hopefully bring it up a couple tenths and add a little power from not being so rich and I think it did , I swear it feels like it added 15-20 rwhp to this thing ..... GOTTA LOVE IT .....