Tag Archives: BMW

BMW 135i – Fuel-It Stage 1 Fuel Pump Install (N54)

I ordered Steve’s Walbro 255 inline fuel pump kit so I could run up to 100% E85 for more power. The factory LPFP could handle a smaller mix of E85, but it was maxed out at that. I met up with Bob for help with the install. He has installed the pump before and also has the flashing tools and software. We installed the pump this weekend and flashed the ECU with a free E85-specific flash that BMS offers.

BMW 135i ready for install

First step: remove the fuel pump bucket from under the rear seats…

BMW 135i fuel pump location

As you can see in the picture above, we unplugged the connections first. I didn’t take any pictures of the actual removal process. It’s fairly straightforward if you follow Steve’s instructions. Here it is, removed:

BMW 135i fuel bucket

Continue reading BMW 135i – Fuel-It Stage 1 Fuel Pump Install (N54)