Will I need a fpr if I install my grams 320lph pump with the SOS FUEL pump wiring kit?

2008 club racer
Kraftwerks v2 kit getting ready to install.

 

Not unless you plan to raise your fuel pressure.

 

The 2008 has a returnless fuel system so you can't just add a fuel pressure regulator. SoS does sell a new bypass valve that mounts next to the fuel pump in the tank that that boosts fuel pressure by around 3 psi. It is just a different part number Denso piece. I used it and it did raise fuel pressure, but I didn't have any way to measure how much. I think the OEM fuel pressure will be fine for your Kraftwerks kit.

 

I ran 500hp with the stock fpr.