Quote: Originally Posted by neonmarine
I have a buddy getting this returnline and need some info on it. For starters, why is this called a returnline when it does the same thing (almost) as stock? I have the Realtune kit, the difference I see is that there is no flow out of the rail. The fuel from the stock/AGP runs into oncoming fuel.
Stock sends it back down the fuel line, to the regulater and into the tank. AGP sends it to the fill line and into the tank. The only difference is an adjustable regulater and a shorter distance of traffic jams.
Who is using this in the 450hp range? Thoughts?
that is incorrect. in stock form, the regulator has a bypass valve in it that opens at about 58psi and bleeds excess fuel pressure back into the tank.
with the agp kit, the pressure in the feed line before the rising rate regulator is about 80psi(i think). after the rrfpr, the pressure is whatever you set it to.