I got this leftover Fuel Pressure Regulator (Top Speed brand with a 150psi limit) from my Nitrous system on the Honda Civic I have and was wondering if it would do any good to a NA S13. If it does then what should I set it at?

 

hmm..unless you are in the high rev range i doubt you would need it..the nissan MAF is pretty good till you start getting into the 10 PSI range...probaly not even that

but if you throw in a nice lumpy cam then you could use it

 

Thats what I figured since its pretty much stock, thanks.