Stage 1 Mk7 Golf R – looking to confirm if the LPFP is the weak point. Car is still pulling ignition despite new OEM plugs, coils, and Tesco 99. Slight misfire at idle remains.
Volkswerks in Tunbridge Wells said they can’t test LPFP function, but there must be a way to log duty cycle vs requested fuel rail pressure under load. Has anyone here done this or know the correct method to verify if the LPFP is maxed out before I remove and send my mpi injectors off to be cleaned?