Just wondering if it matters which port you hook your fuel in (from rail) too; the side port or the bottom port. Never used an FPR before and I can't read Japanese script unfortunately. Thanks

in from the side port, out from bottom.

Yes it matters, in the side, out the bottom. Gauge port is on the side to.

Here is the sticky
http://forums.maxima.org/showthread....1176625&t=1117

Like Jime says, it definitely matters. If you hook it up backwards the fpr won't develop pressure (or maybe it shuts off all flow through the fpr, I can't remember).

I bought a Warpspeed fpr that came with incorrect installation instructions. Fortunately I did some experimenting before installing and found out that the fuel pressure gauge port was not being pressurized the way the instructions said to hook up the lines. That had to be a mistake, so I reversed the connections and it has been working fine since.

Thanks a ton guys!