more answers can be found at the 3gen forum of
www.preludepower.com
your car is running crappy as hell. mine had 28ish mpg with bad rings. now i get about 26 with a rebuilt and modded motor.
you may be getting too much fuel if it's boggy under 3k.
the shorter intake runners open at 3-3500k, which is why you'll feel the power surge.
auto or stick?
autos suck in the 3gen.