Do I need one when switch from stock injectors to 30lb svo's?
Thanks!


Rob.

 

You need the stock FPR, you don't need an adjustable. Just tell your programmer what injectors you are using, and "stock fuel pressure", and they will set the injector constants as required.

 

Thanks Fred!

 

I agree with Fred that the computer program can compensate for the larger injectors but since you have an aftermarket cam and ported heads, an adjustable FPR gives you more options. My heads and cam were running a bit lean at idle with the stock fuel pressure but WOT looked great for A/F ratio. I was able to bump up the fuel pressure to fix the lean idle (was throwing a code). I'm sure this could also be corrected via programming but since I'm not doing my own programming it's a pain to keep going back to your programming source.

 

I had my pcm programmed fro 32lb injectors and a 255lph fuel pump....I didnt install the new fuel pump and now my car is running wayyyyy rich and fowling plugs.....should I get a fuel pressure regulator?

 

No get it reprogrammed for what you do have that is the only right way to do it since it is more than just the flow rtating changed for injectors.

 

so what you are saying is that when it was programmed, it was done incorrectly? If I installed the 255lph, would my problem go away?