Better flowing exhaust manifold, bigger injectors/pump and run it on e85. Running it on e85 could get expensive, with out up grading the turbo and pushing more boost you maybe stuck, but the power you have now seems fairly decent considering you have don't basic mods

__________________
Marti


Car: C Red S13 Silvia 2.3l 400+rwhp-SOLD
Daily ae82 4age corolla (light mods)-Sold
Daily:SWB GQ Patrol
Will be a 03-04 STI next