What benefit of running a N/A FPR?

[SnowBird]

My setup. E3 16G, 190 pump rewired, 650cc injectors. Going to be running at 25-26 psi with some meth. Would or could I benefit from the N/A FPR? I searched and all posts said cars ran like crap, but they all had 255 pumps. I didnt even think 255 pumps were necessary with a 16g. By the way, I have a 1990.

 

[blcknspo0ln]

I don't know what the deal with NA FPR's are, but I recommend getting an AFPR. A 190 pump is perfectly fine with 550's and an e316G. However, with any pump that is larger than stock (flow wise) you WILL overrun your stock fpr. Question is, how much? And by how much, how much chance are you taking to get an inconsistent tune because of overrun/variable base fuel pressure rates?

 

[SnowBird]

I don't know what the deal with NA FPR's are, but I recommend getting an AFPR. A 190 pump is perfectly fine with 550's and an e316G. However, with any pump that is larger than stock (flow wise) you WILL overrun your stock fpr. Question is, how much? And by how much, how much chance are you taking to get an inconsistent tune because of overrun/variable base fuel pressure rates?[/QUO

Are 550's even enough to push 26psi on a E3? And I thought I read that only 255's will over run the stock FPR, and only at idle. Any truth behind this? Now I am concerned with you saying 550's are enough to max an E3, when I did my math I could have sworn I bought 650's to be safe.

 

[blcknspo0ln]

550's are fine, especially with the addition of meth injection, just watch your IDC. As for the FPR question, just use your common sense. For instance, stock FPR is built for (I'm going to guess this #, just as an example) a stock 130 pump. In essence, if you are running a 190 or larger, that FPR is ONLY built for use with a stock 130 pump and will be "overrun".