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      06-28-2016, 07:41 AM   #1
msi200
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Manual Gearbox Questions

Hi all,
Just received my new M2 and really enjoy it after the F10 M5 DCT it replaced.
I've been driving manual cars my whole life (but not BMW) and I think this one has some strange behavior.

Each time I shift from 1st to 2nd gear, the car hesitates for an instant just after I've released the clutch pedal for 2nd.
It feels as if software doesn't let the car pull immediately after changing to 2nd gear. Or as if the engine has lost boost after upshifting.
As a result, the car leans forward every time I shift 1-2. I tried giving it some throttle between gear changes, but this doesn't help.
This effect is most pronounced when starting uphill, and is less pronounced when shifting 2-3.
I think it is trying to protect the gearbox/clutch, because I have never experienced such behavior in other manual cars.

Any ideas are welcome

The car about 300 miles on the clock.
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      06-28-2016, 07:50 AM   #2
Yellowflash21
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It's bit normal and it will take you some times to get use to it.

My advise, release the clutch bit gentle and when engaging in second gear be gentle again.

Once again you will find the golden spot over time, trust me.
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      06-28-2016, 08:24 PM   #3
gmzanatta
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One thing to note from my Z4MC: the hill assist does seem to "delay" clutch engagement on steeper slopes, mostly to do with how the brake mapping is set up.

Can't comment on the rest as my car is waiting for a boat
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      06-29-2016, 07:47 AM   #4
David@ActiveAutowerke
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It's a combination of losing boost and the car protecting the drivetrain by limiting torque. Try going full throttle and shifting above 6500rpm and you will notice that you'll have full power after the shift. BMW has programmed the ecu to drop boost between shifts during normal driving, but by redlining the car they allow you to hold a bit more power.
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      07-01-2016, 03:17 PM   #5
msi200
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Thanks for the replies guys, the car is under 1200 miles, so no revving above 5500
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      07-05-2016, 10:41 PM   #6
Kolyan2k
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Noticed this too on 235i, same tranny though
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      08-14-2016, 07:00 AM   #7
itf joegun
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Quote:
Originally Posted by David@ActiveAutowerke View Post
It's a combination of losing boost and the car protecting the drivetrain by limiting torque. Try going full throttle and shifting above 6500rpm and you will notice that you'll have full power after the shift. BMW has programmed the ecu to drop boost between shifts during normal driving, but by redlining the car they allow you to hold a bit more power.
Does Sport or Sport+ affect this behaviour?
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      08-15-2016, 07:55 AM   #8
David@ActiveAutowerke
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Quote:
Originally Posted by itf joegun View Post
Does Sport or Sport+ affect this behaviour?
I'm not entirely sure. At that time I was driving with DSC completely off.
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