Originally Posted by Ænema
That's normal... and it's actually the LPFP that's priming when you hear that noise.
Still concerned tho about the pump no longer priming. That was supposed to be part of the fix for the failing HPFPs, right? Did Cobb determine that BMW disdiagnosed the problem and priming was not really necessary?
2008 BMW 335i//Jet Black on Black Dakota Leather//Steptronic, Sport Package, Premium Package, Logic7 Sound, Aluminum Trim, iPOD & USB, Cobb S1+ Sport, ER FMIC, K&N Filter, H&R Sport Springs, Koni Yellows, ECS Tuning spacers (F-10mm/R-15mm), OEM Rear Aero Spoiler, OEM Sport Diffusor, Cyba 3.8" Tips, OEM Aluminum Pedals, M-tech Steering Wheel, Clear Reflectors