Sspcivic31
Drag Race Newbie
Is the hpfp actual labeled "fuel pressure" in vag com?
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I think its fuel rail pressure. group 106 maybe
there is no lpfp pressure sensor on the tsi cars. you have to plumb an external gauge in to monitor. i put a t fitting on the inlet to the HPFP and measured it there with my digital fuel pressure gauge.
after i replaced the lpfp control module the car would make like 4.5+ bar at wot under load. the inj pulse width and the hpfp all looked good afterwards. the ecu can lower the HPFP request for sure to save the motor. i would see the specified only looking for 120 bar and actual within about 5 bar of the specified while this was going on. you could feel it on the top end. was like the car was surging a bit. almost like the sensation of being pushed into the seat on hard acceleration. after the controller it went back to 150+bar and all was well.