Anyone know how much boost i can run on a stock R33 with exaust and intake. using a turbosmart gated controller.
do i need a fuel cut defeater?

What kind of car? Gts-t, Gtr?

Depending on the year, spec I or spec II it makes a difference. The early model spec I's had ceramic compressor wheels while the later 96 onwards had plastic, yes plastic compressor wheels!

I wouldn't push a ceramic turbo over 17psi and even at that not for prolonged periods of time. The Spec II i wouldn't suggest more than 15psi for any extended period of time.

Keep in mind turbo condition plays a major factor. Also you better have a very good fuel system or you'll go lean as and burn the motor up.

Assuming he's referring to an R33 GTS25t

Happy B-Day Mick Trainer!