Hey bro,
Thats close to imposible for 300-400hp all motor out of a honda engine . If I recall I think skunk2's all motor drag integra is only making something around 350whp and thats a completley unstreetable race car.

I woulda had a dyno on my GSR turbo engine but it blew 1 night before the dyno day so I never got a chance to see what it put down. It was running 6psi and it was pretty quick, spunem in 1st and 2nd with ease ! Now im building the engine and this is the only way to get the stock honda engine to produce a safe 300-400whp on a good tune. Im going to tune this new engine on uberdata, an awsome alternative to hondata.