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Old Nov 11, 2020 | 12:42 PM
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dyhunt
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c450
C450 dyno problems
I put my car on the dyno and in manual mode in 4th gear it shifted at 5k rpm for all 3 of the pulls. Has anyone had this problem? Do I need to have them run the car in auto instead? If anyone has any dyno tips for when I go back in a couple of weeks that would be appreciated as I am not expert on this at all.

And if anyone’s wondering it made 320 at 5k rpm with bms intakes and jb4 at 4600 elevation so the guy estimated it’ll make right around 400 if we can get it up to 6500 rpm. 2016 c450
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Old Nov 12, 2020 | 11:17 AM
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stockbmw
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2018 C43
Does c450 have manual gear override button? I have taken my c43 in multiple gears over 6000 rpm and held there.
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Old Nov 24, 2020 | 09:28 PM
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Originally Posted by stockbmw
Does c450 have manual gear override button? I have taken my c43 in multiple gears over 6000 rpm and held there.
yep it won’t shift unless I say to on the street but on the dyno it shifted anyways.
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Old Nov 27, 2020 | 03:42 PM
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2018 C63 Sedan
Can be a headache, sometimes need to use a tool to put them in roller dyno mode.
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