BMW E39 M5 Mass Air Flow Sensors

One of the most critical pieces of data collected by your vehicle's ECU is the amount of air available for combustion at a given point.

This data is collected as a voltage reading across a heated wire within a sensor housing. This wire is easily contaminated over time, delivering false readings to your ECU, causing an array of potentially serious issues ranging from poor idle to losses in engine power output.

If you've pulled a specific MAF fault code, or are simply experiencing poor engine performance, ECS offers an assortment of replacement options to resolve the problem.