Thread: Top speed M550?
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      06-14-2019, 02:30 PM   #13
bimmer_335
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Drives: 540 mSport
Join Date: Jul 2009
Location: In the middle of nowhere, TX

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Quote:
Originally Posted by AddyDaddy View Post
So got Dinan tune yesterday,
Still testing it and loving it.

Today on a closed course, I slammed it in sport mode and at while accelerating it stopped at 129mph at redline just like my M5 would stop at speed limiter. I didn't get to re try because I let off and slowed down. But was very strange, hard pull and stopped at redline 5th or 6th gear like I had it in manual and didn't shift, but it was in auto. Any ideas?
your car don't have increased limiter option. If you don't have it from the factory you're out of luck unless you code it
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