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M2 Technical Topics > S55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Uneven Acceleration

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      06-22-2022, 05:22 PM   #1
rahoagla
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Uneven Acceleration

I have a 2020 M2 Comp, DCT. I’ve noticed an issue that anytime I accelerate in first, the rpms get up to ~1600 and then hold there for about 200ms before continuing up. This causes some lurching. This happens in all modes and with traction control on or off.

Is this normal?
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      06-22-2022, 08:34 PM   #2
PHX102
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Quote:
Originally Posted by rahoagla View Post
I have a 2020 M2 Comp, DCT. I’ve noticed an issue that anytime I accelerate in first, the rpms get up to ~1600 and then hold there for about 200ms before continuing up. This causes some lurching. This happens in all modes and with traction control on or off.

Is this normal?
Not in my 2020 M2C 6MT
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      06-23-2022, 08:24 AM   #3
rahoagla
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Adding in some data to show what I mean.

You can see at around T=4.5 the revs drop even though there's no drop in throttle and no gear change. Leads me to believe it's not transmission related.
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