Add an M50/E36 variable throttle position sensor to your BMW M20 or M30 throttle body for MegaSquirt and compatible standalone ECU conversions. Complete the conversion: Pair this mounting adapter with the BMW M20/M30 to M50 TPS Adapter Harness, or buy the complete conversion kit and save 10%. Features
Choose the M20 or M30 adapter for your
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Doug · September 17, 2026
This thing is great. It comes with an O ring which is a nice touch, fits perfect no problems at all.
Doug · September 17, 2026
Works well
I ran a janky setup for a solid decade before I decided to pull the trigger on this. I am running an M50 TPS on an M20 turbo and would have random issues where my throttle position was off from time to time and it would cause intermittent stalling issues when I came to a stop. Ever since I installed this, I have had zero stalls. So if you think you can come up with a contraption that “may” work, don’t rule out this adapter. Makes daily driving my turbo E30 more predictable.