If you are running the "high pressure" walbro 255, then it will overrun your stock FPR. The only reason for the Nismo unit, is that it doesn't suffer from that problem.UMS_CA18DET wrote:I wouldnt go with a Nismo unit. The nismo FPR doesnt even flow that much more than the stock unit. Also your stock FPR will be fine you have a standalone so controlling fuel is no problem. The Stock FPR is rated up to 500hp supposidly.
If I was to choose a FPR I would go with a Aeromotive, Mallory, or a SARD FPR.
This can be compensated for if the overrun is consistant. In my particular case, the overrun was irratic and made tuning very hard, and my AFR'S weren't ever stable. Once I replaced it with the new NISMO FPR, everything was fine.c-rad wrote:If you are running the "high pressure" walbro 255, then it will overrun your stock FPR. The only reason for the Nismo unit, is that it doesn't suffer from that problem.