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Fuel pump/overpowering the FPR?


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So i got a 255lph fuel pump, and my car runs super rich, i put and inline fuel pressure gauge and it reads 70psi. decided to get a aftermarket fuel pressure regulator and it seems to regulate it down to about 60psi, now for a Sr20de i read it needs to be at about 40psi thats a big difference. Now i thought the FPR was bad so i bought another one and it did the same exact thing. So i either have it hooked up wrong or its a POS or is it possible that my fuel pump is just too strong ? ? ? 

Going to borrow my buddys FPR in a few days to test it again because i know for a fact his works..

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Maybe it's the gauge that's wrong. Try the gauge on a known good running car.

Well i thought it might be the gauge, but i have 2 gauges, 1 inline and 1 on the FPR but both read the same thing. now i mean i guess both gauges could be broken? but i doubt it if they both read the same thing, and when i pinch the fuel line they both drop to the same pressure. now i forgot if i mentioned i have tried 2 FPRs and both did the same thing. thats the only reason i suspected maybe its possible for the fuel pump to overpower the FPR ? Unless im just super unlikely and both FPRs i received were broken :confused:  :crying:  

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Put my friends fuel pressure regulator off of his car and on to mine, did the same exact thing, wouldnt get down past 60ish PSI, so i guess that means my fuel pump is just to BA? he had a extra fuel pump thats only 190lph instead of 255lph so ill guess ill give that a try

 

Starting to look like this is normal. Maximum pressure is always going to be higher than when running under load. A 225 and a 190 will have the same maximum pressure only the volume will be different.

 

It's EFI and when warmed up the system is governed by feedback from the O2 sensor. How can it be running rich unless it's in open loop mode???

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It's EFI and when warmed up the system is governed by feedback from the O2 sensor. How can it be running rich unless it's in open loop mode???

Well enough black smoke comes out of the exhaust to burn your eyes, my A/F gauge is pinned in the yellow, I'm literally at a loss and some days want to set the car on fire because it's not making sense to me. :(

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Check adjust the throttle position sensor on the throttle body. It tells the EFI if you are idling or at full throttle. If the EFI is told full throttle it will default to an over rich condition for performance and ignore the O2 sensor. I'm not explaining it very well so find someone with more know how on the workings of the EFI.

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