Disabling Speed Limiter

ASKED BY:

Frank Edwards

FSC MEMBER:

CATEGORY:

General

Question

Hi Gil. I wasn’t sure what category this might come under (Electronics? Engine? Transmission?) so I chose General. Yeah, a cop out, but problem solved. 😉 Q: Is there a relatively simple way to defeat the speed limiter on my 5 Series? Background: On my Toyota Supra, it was possible to pull a fuse and disable the speed limiter (it also disabled other components, of course). That car was limited to 155 mph normally and I would occasionally hit the limiter on track days at Sebring. (Particularly when I had the boost turned up to 23 psi!) I’m looking for a similarly simple way to do the same thing on my new car. Can you help?

Answer

Hello Mr. Edwards, what year and model is your car?

Gil Neves

Florida SunCoast says:
May 6, 2021 at 9:44 pm
Doh, I should have included such basic info!
It’s a 2021 M550i with pretty much every option (I bought it off the lot and it had the options I wanted, with a few I didn’t care about).
Thanks.
—
Frank Edwards
Reply
Frank J. Edwards says:
October 19, 2021 at 5:12 pm
So it’s been a few months… No progress on figuring this out? I could really use some information before a track day coming up in November…
Reply
1. Florida SunCoast says:
  October 20, 2021 at 9:56 pm
  Hello Mr. Edwards, the only way to disable the speed limiter will be to have a “tune” installed. There are a lot of different companies that offer it, however, if installed it will cancel your warranty with BMW. When you install a tune it will log the serial number in the control unit, even if you remove it later. Once you go to the dealer for a warranty claim, they will look at that log, if there is a serial number in it that does not match the BMW list, it will void the warranty. Sorry for the delay. Have fun at the track day.
  Gil Neves
  Reply