Works great! Some tips: — Be sure to get INPA installed on a Windows laptop and an INPA compatible OBDII - usb cable to properly diagnose your N54/N55. Trust me the pain and expense of trying to diagnose this machine without the computer is straight up NOT worth it. — Find the low pressure fuel sensor live data in INPA, it should be targeting ~72 psi with the low pressure fuel pump to deliver fuel to the high pressure fuel pump. If your reading is fluctuating, regardless of what range its in, your sensor is working. If its reading one or two similar constant values all the time your sensor is bad. — BE SURE to either let the engine starve of fuel and die (if the problem is bad enough) or pull a low pressure fuel pump fuse, start the car and let it die. This relieves the pressure in the fuel delivery system and keeps it from spraying everywhere when the sensor is removed.

Fits perfectly fine on my e61 (n54). Installation was easy but a pain to get to if you have big hands.

good part but this review is more for the shipping, two times have paid ten bucks for the 2 days shipping both times it takes 4 days. This is complete BS knowing I have done the free shipping and gotten it faster. You are completely wasting money taking their fast shipping its BS.

review

If buying for a 2008-2012 E9X M3 (original brass colored pressure sensor), do not forget that you will also need the adapter 16124800029.

MY N54 HAD LONG CRANKING AT STARTUP AND RESULTED IN MULTIPLE MISFIRE,AFTER INSTALLING THE LPS MY PROBLEM HAS BEEN SOLVED.

It showed up fast and fixed my erratic fuel readings