you could have the ECU remaped, probably try bigger air intake and better free flowing exhaust/maifold from 3.0i. I had a 2.2i that had the 1st set of cats removed and i swear it was fast just as good as my 3.0 and 2.5i. I had plenty of battles in it that it shocked me so i can only think the more free flowing exhaust helped. Remap is always good though as its like a mini brain checkup and will leave you with a better power/torque curve.