my current set up is a b18c gsr with 9.5:1 je pistons. eagle rods. gsr head is untouched. garrett 50 trim t3/t4 ar 63 turbo stage 3 wheel tial blow off and tial waste gate. im wanting to thit about 400hp is it possible at about 22 psi

 

400hp to the crank, yes, to the wheels, No. not with that particular turbocharger at that boost level.

 

well that sucks completely.. i have a 750cc injectors 255walbro. what size turbo would i need to make a 400whp dyno?