06-28-2016, 07:41 AM | #1 |
Enlisted Member
19
Rep 48
Posts |
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. |
06-28-2016, 07:50 AM | #2 |
First Lieutenant
370
Rep 354
Posts |
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. |
Appreciate
0
|
06-28-2016, 08:24 PM | #3 |
Colonel
1823
Rep 2,948
Posts |
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 |
Appreciate
0
|
06-29-2016, 07:47 AM | #4 |
BimmerPost Supporting Vendor
813
Rep 526
Posts |
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.
|
Appreciate
1
|
08-14-2016, 07:00 AM | #7 | |
Lieutenant
169
Rep 428
Posts
Drives: G29 Z4 M40i; G05 X5 M50i
Join Date: Apr 2010
Location: Rhineland Palatinate - Germany
|
Quote:
|
|
Appreciate
0
|
08-15-2016, 07:55 AM | #8 |
BimmerPost Supporting Vendor
813
Rep 526
Posts |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|