Fuel pressure regulator
 

I want to up the boost and fuel pressure is there some place that makes an adjustable FPR for a Z31? Thankx
Jay

Re: Fuel pressure regulator
 

Sure, http://www.cartech.net/fuelaccessories.html
There is much more too it than that though. You might want at least a supplemental injector and a good intake and exhaust if you don't have it already. Look here...http://z31.com/faq/turbo.faq.shtml

ZenArcher

Re: Fuel pressure regulator
 

unless you're running 14psi or more, you likely won't ever notice the difference because the ecu will just shorten the duration of time the injectors open in an effort to compensate for the higher pressure and keep the aif fuel mix correct.