I got a 2008 135i with no fuel coming from the pump low pressure side...the low pressure pump works when I pulled it out and put power to it. something else is at fault and was told EKP module. Any other ideas as I go digging into this? May I also add previous owner wired two Helper pumps with surge tank in rear (removing all this shit, have all new PI going in and stage 3 pump). The wiring they did they spliced into the red and brown wire on the pump connector which is to the EKP as well. THANKS!