Wait, is this the proper way to install FPR/GAUGE???

[Rb20_POWER]

http://lanz-cars.blogspot.com/....html

I've had the same FPR installed on my rb20det but have read that the gauge is suppose to be installed on the return line and not feedline to get a proper reading. Can someone verify this??? Thanks for the help guys!

[Rb20_POWER]

return line? feed line?

[RustspecS13]

You need on the feed line between the fuel filter and injectors because you need to measure the pressure the injectors see, not what goes back to your gas tank.

~Alex

[virus77]

Fuel pressure regulators go on the return line not the feed... even oem is like that, the fuel enters the rail and gets to the regulator which controls the pressure and lets the extra fuel back into your tank via the return line on the regulator.

Feed line only has a fuel filter on it and a direct connection to your fuel rail.

[Rb20_POWER]

ok...so now u guys are making it even more confusing. Rustspec says the feedline, the link i provided says feedline, now virus77 says the goddamn return line which I had it on in the first place and have read before. NOW you can see why i'm confused. WTF!!!!

[Joe]

You need on the feed line between the fuel filter and injectors because you need to measure the pressure the injectors see, not what goes back to your gas tank.

~Alex

for a gauge, yes but for a regulator no

it needs to be on the return line because its going to regulate pressure

goes like this

tank > pump > filter > fuel rail/injectors > FPR > return to tank

make sure you get rid of your factory regulator.

[Cjmartz2k]

FPR will always go after the rail. The gauge or where it reads off of shouldn't matter anywhere between the filter and the FPR (or on the FPR like most), but I guess the most preferred option would be after the rail. FPR after the rail 100% though. Like Joe said, if you need proof, just look at the factory set up.

[RustspecS13]

I thought he was just asking about were to put the gauge so that's all I was talking about. No big deal.

But yeah +1 for joe, and don't forget the gauge goes between the fuel filter and FPR some where to read the pressure the injectors see.

~Alex