Do i need to buy a fuel pressure regulator for my 92 z28? or is there a stock one that i can use to make the psi higher? i know i need a fuel gauge. and what psi would you recommend for maximum power with the stock fuel injectors?

 

You can either buy an AFPR or make your own. I believe 46-50 PSI is the way to go. I'd get some bigger injectors if you wanna get an AFPR, you'll get better results.

 

Chi-TPI,

You already have an FPR, and it can be converted to an adjustable unit for less than $1.00.

TPI AFPR Conversion.pdf

You'll need Adobe Acrobat Reader to open/view/print the file (see link below).