Our higher compression is one thing, but the S16g or the T3/T4 turbos flow more air per pound of boost than the stock T25 turbos that the GST/X come with. That means that we make more HP per pound of boost over the T25 at the same boost level. The 420A is a sweet engine. After rebuilding and assmebling my engine, its really a damn good design. Very simplistic also.
13.5 @108 MPH-2.2 60ft(stupid FWD!) S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential fuel injection) My webpage: http://eclipsed4evr.home.comcast.net -1998 Mitsubishi Eclipse RS-T- "Toy" -1992 Plymouth Laser Turbo AWD(SOLD) -2000 Honda CR-V(daily)