e8x

  1. digitalashley

    SOLVED N54 (E87) LPFP psi low??..

    Hi everyone, I have gone from a stock 135i (N54) low pressure fuel pump due to low psi (52-42psi) readings at idle and throughout RPM range (rail pressure would drop and cause limp mode), to a walbro 450 and have retained the bucket and Venturi to keep it close to stock as possible and...
Top