Keep losing throttle blip

Corinne · 09-18-2018, 09:30 AM

I've noticed several times that the throttle blip function disappears from time to time when driving in Sport. While this might delight many drivers, it doesn't do it for me coz I really like my throttle blip ! Heel and toe while wearing high heel anklestrap sandals is not an option. The only way to get it back is to toggle the switch from Sport to Comfort, or Sport+, and then back again to Sport.

I'm wondering if this is a malfunction. Has anyone else experienced this ? It's not just happening at engine speeds when the down-change is perfectly matched, it's when the engine actually needs to be blipped. I'm going for my first year service in about 6 weeks so will mention it to the dealer but I don't want to appear to be stupid (even if I AM !). And the first person who suggests I change my footwear as a remedy will get a thick ear

JRF · 09-18-2018, 10:13 AM

in Sport and Sport+, rev match does not seem to behave in an entirely consistent manner. I have noticed this as well.

My guess would be that iDrive is trying to apply some intelligence to the application of rev match beyond just RPM, gear, and speed.....e.g. it's considering engine temp, braking, and how aggressively you are driving.

jason86 · 09-18-2018, 03:04 PM

I also noticed that a couple of times. Especially when i was driving in low speed with low rpm. But never happened when i was pushing it and within the high side rpm range.

eeyang92 · 09-18-2018, 03:35 PM

Only happens to me if I let the RPMs drop below 1k. Otherwise, it's been entirely predictable.

swilliams · 09-19-2018, 03:57 PM

As long as I'm engaging a gear soon after pushing the clutch in, mine blips perfectly every time. If I've waited a few moments it may not blip so I simply clutch-in again and it will blip as expected.

Corinne · 09-20-2018, 04:25 AM

OK it definitely sounds as if mine has developed a fault then. Thanks for your input !

F87_LCI · 09-20-2018, 07:34 AM

happened to me on one downshift this morning 4 to 3...but then the car blipped on 3 to 2. Happens every now and then. I even posted about it back when I first got the car and got the usual canned responses of "You just don't know how to drive" and "It's not the car, it's you"...you know really helpful input

My advice would be to do exactly as you are doing and that is to mention it to your service manager when you take the car in. Hopefully they can replicate the issue and put in a fix for you if needed.

09-18-2018, 09:30 AM	#1
Corinne Captain 1171 Rep 709 Posts Drives: M2 2018 LBB 6MT Join Date: Feb 2015 Location: French Alps iTrader: (0)	Keep losing throttle blip I've noticed several times that the throttle blip function disappears from time to time when driving in Sport. While this might delight many drivers, it doesn't do it for me coz I really like my throttle blip ! Heel and toe while wearing high heel anklestrap sandals is not an option. The only way to get it back is to toggle the switch from Sport to Comfort, or Sport+, and then back again to Sport. I'm wondering if this is a malfunction. Has anyone else experienced this ? It's not just happening at engine speeds when the down-change is perfectly matched, it's when the engine actually needs to be blipped. I'm going for my first year service in about 6 weeks so will mention it to the dealer but I don't want to appear to be stupid (even if I AM !). And the first person who suggests I change my footwear as a remedy will get a thick ear __________________ 2011 Lotus Elise SC, 2002 BMW 330d, 1990 Caterham Super 7 HPC (sold), 1985 Porsche 911 Carrera SC (sold), 1978 Caterham Super 7 (sold), 1972 Triumph TR6 (sold), 1972 Jensen Healey (sold), 1965 Triumph TR4A (sold)
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09-18-2018, 10:13 AM	#2
JRF Lieutenant 331 Rep 425 Posts Drives: 991.1 GTS (NSX, M2, e92 gone) Join Date: Sep 2018 Location: New York iTrader: (0)	#metoo in Sport and Sport+, rev match does not seem to behave in an entirely consistent manner. I have noticed this as well. My guess would be that iDrive is trying to apply some intelligence to the application of rev match beyond just RPM, gear, and speed.....e.g. it's considering engine temp, braking, and how aggressively you are driving.
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09-18-2018, 03:04 PM	#3
jason86 Private 44 Rep 88 Posts Drives: 2018 BMW M2 LCI (AW) Join Date: Sep 2012 Location: Toronto iTrader: (0)	I also noticed that a couple of times. Especially when i was driving in low speed with low rpm. But never happened when i was pushing it and within the high side rpm range.
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09-18-2018, 03:35 PM	#4
eeyang92 Captain 319 Rep 660 Posts Drives: LBB M2 LCI 6MT Join Date: Oct 2017 Location: CA iTrader: (0)	Only happens to me if I let the RPMs drop below 1k. Otherwise, it's been entirely predictable.
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09-19-2018, 03:57 PM	#5
swilliams Second Lieutenant 263 Rep 198 Posts Drives: 2017 LBB M2 Join Date: Jan 2016 Location: Charlotte, NC iTrader: (0)	As long as I'm engaging a gear soon after pushing the clutch in, mine blips perfectly every time. If I've waited a few moments it may not blip so I simply clutch-in again and it will blip as expected.
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09-20-2018, 04:25 AM	#6
Corinne Captain 1171 Rep 709 Posts Drives: M2 2018 LBB 6MT Join Date: Feb 2015 Location: French Alps iTrader: (0)	OK it definitely sounds as if mine has developed a fault then. Thanks for your input ! __________________ 2011 Lotus Elise SC, 2002 BMW 330d, 1990 Caterham Super 7 HPC (sold), 1985 Porsche 911 Carrera SC (sold), 1978 Caterham Super 7 (sold), 1972 Triumph TR6 (sold), 1972 Jensen Healey (sold), 1965 Triumph TR4A (sold)
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09-20-2018, 07:34 AM	#7
F87_LCI Lieutenant Colonel 1787 Rep 1,718 Posts Drives: 2018 LBB F87 Join Date: Mar 2007 Location: North iTrader: (1)	happened to me on one downshift this morning 4 to 3...but then the car blipped on 3 to 2. Happens every now and then. I even posted about it back when I first got the car and got the usual canned responses of "You just don't know how to drive" and "It's not the car, it's you"...you know really helpful input My advice would be to do exactly as you are doing and that is to mention it to your service manager when you take the car in. Hopefully they can replicate the issue and put in a fix for you if needed.
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