Just switched over to a wet kit, any of you fine folk happen to know what the fuel line psi is on the LNF's, and if there's any fluctuation on that pressure under wot in lieu of the high pressure fuel pump?

 

The main high pressure line is at 400-500psi at idle give or take a few psi and above that depending on throttle position up to 0-3000psi. all depending. For the pick-up fuel pump its 55-70 psi.

Fluctuation there sure shouldn't be or you'd got a problem with ur fuel system on the system electronics

 

Thanks much. Its the 55-70 psi variance that has me a little worried as it will change the jetting... Does it spike or dip when the hpfp kicks into heavy load? Or is there a constant pressure that just varies from car to car.

 

High Pressure Cam-Driven Fuel Pump
A high-pressure, cam-driven pump provides the fuel pressure required of the 2.0L Turbo's direct injection system. The engine mounted fuel pump is augmented by a conventional electrically operated supply pump in the fuel tank. The fuel delivery system features a high-pressure stainless steel feed line and a pressure-regulated fuel rail, without a conventional fuel return line from the engine to the tank. Fuel pressure varies from about 750 psi at idle to 2,250 psi at wide-open throttle.

 

No idea, there's only one pressure sensor and its on the high pressure side. You'd have to hook up a gauge on the low pressure side and watch that under idle/wot.