I have a B&M fuel pressure regulator and am debating on weather to install it. My car is stock except for an AEM CAI. Do you think that the FPR will make any diffrence to the performance...even a little.
Thanks

 

I don't think it will. Did someone give it to you or something or did you go out and buy it?

 

I would only install it if you plan to get your car tuned.

 

The fpr will most probably make absolutely 0 increased power on your car. The ITR already has a rich stock fuel map. Just adding a CAI will not create the need for more fuel. If you add (exhaust, cams, compression, boost, etc.) you will create the need for added fuel, and then benefit from the fpr. The only thing it will do for you right now is look cool sitting on top of your fuel rail. Plus, with the B&M you have to hack off the top of your stock regulator and then clamp this thing on. I would sell it, and buy an AEM unit, which is a direct replacement for the stock, and a bolt on (it won't help you either until you do some mods)