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TBatt · 07-12-2016, 08:26 AM

If you are still running the stock (non-return) system then you do have a problem. It could either be the fuel pump check valve or the pressure regulator. Hope it is the fuel pump because that is an easy fix where the regulator isn't. The stock pressure regulator is a part of the fuel pump assembly and isn't sold separately. A new fuel pump assembly will run you around $500. I would think that this would be the perfect time to go to a return fuel system and external regulator with boost compensation. Good luck!

Give Charles (Phunk) a call. He is super easy to work with and has quality products!

07-12-2016, 08:26 AM	#14 (permalink)
TBatt Premium Member Join Date: Apr 2013 Location: Huntsville, AL Posts: 832 Drives: 2019 GT-R Rep Power: 20168	If you are still running the stock (non-return) system then you do have a problem. It could either be the fuel pump check valve or the pressure regulator. Hope it is the fuel pump because that is an easy fix where the regulator isn't. The stock pressure regulator is a part of the fuel pump assembly and isn't sold separately. A new fuel pump assembly will run you around $500. I would think that this would be the perfect time to go to a return fuel system and external regulator with boost compensation. Good luck! Give Charles (Phunk) a call. He is super easy to work with and has quality products! __________________ RJM pedal, Hotchkis Sway Bars, FI TDX, FOG Light, Z1 Slotted Drilled rotors, Stillen SC, Quaife ATB, Z1 Oil cooler, AEM Gauge Set, Galeforce gauge mount, Avant Garde M590 Hypersilver w/RE-11, TopgunZ A2A kit., ECUtek tuned by Seb: ROLL TIDE!