Gas mileage

im getting 20mpg with my 1996 gsx with catback exhaust and intake.
And was wondering if that's about what i should be getting.

its not, but thats what i get. stock motor, GST

Thats got to be city driving right? I wonder how much more gas the 4g63 burns compared to the 420A. The best milage I ever got was about 420 miles for the tank on the highway, with a chevy small-block in the trunk.

it's about half and half between city/highway

it's also a 5-spd

I get roughly 300 miles per tank if I drive around soft.

I can get about 420kms while driving moderate to hard