HELP!! my 300zx TT feel slow!!

[hanajin]

Hello
I have 94 300zx twin turbo
JE piston, Eagle rods, 555CC injector, GT28R turbo, HKS down pipe, stillen exhaust, FMIC MBC 7psi)
Very tiny small leak off turbo maybe line.
Stock wastgate.

My car feel like sooo slow. wut happen?
i have 91 MR2 turbo 7psi.
this car i can feel my neck pulling back.
but my 300zx TT not feeling as like mr2. and feels slow.

maybe because i have stock wastegate??
please help me!!!!!! i need you guys help!!

[vulcanrush]

check for boost leaks, and isn't stock boost 9-psi, how are you running less than stock boost?
wastegate settings on those turbos should be around 12-to-13-psi, i would think?

[BigTDogg (MA)]

Stock wastegate actuators with a GT28RS is a problem. They're not adjustable, so you can't balance them. Additionally, they're set for 7PSI safety boost, so you're bleeding off early.

Do a boost/vac leak check, and check the vac routing on your MBC install.

Oh, and *what.

Welcome to Nico.

[hanajin]

thank you bigtdogs. yes im a new with 300zx so. need alots help from ya. i will check any leak and back to you. thank much and thank to also vulcanrush