Accidental redline during break-in

BeamingE39 · 11-17-2011, 02:55 AM

Apparantly the DCT will downshift for you when slowing down even in sequential mode

Long story short, I thought I was in 3rd gear, DCT puts me to 1st gear. I accidentally redlined it for a fraction of a second. It occured at about 200 miles, should I be worried? I was planning on keeping this one for over 100k miles...

I'm following all the general break-in procedures: highway and city, different revs and speeds, no WOT... I'm really anal about making my cars perfect and now I'm kinda freaking out.

-=Hot|Ice=- · 11-17-2011, 03:15 AM

You'll be fine.

karussell · 11-17-2011, 03:18 AM

Quote:

Originally Posted by NAForever

Apparantly the DCT will downshift for you when slowing down even in sequential mode

Long story short, I thought I was in 3rd gear, DCT puts me to 1st gear. I accidentally redlined it for a fraction of a second. It occured at about 200 miles, should I be worried? I was planning on keeping this one for over 100k miles...

I'm following all the general break-in procedures: highway and city, different revs and speeds, no WOT... I'm really anal about making my cars perfect and now I'm kinda freaking out.

your car will be fine.

duk · 11-17-2011, 03:24 AM

trade it in now!

ull be fine

persian54 · 11-17-2011, 03:27 AM

Sorry you should get rid of it

not way a high reving M3 engine will last now that it's been redlined!

BeamingE39 · 11-17-2011, 03:29 AM

What a relief. About after how many over revs during break-in would you say would damage it? I'm thinking about putting the car in D just to be safe...

luis_m3 · 11-17-2011, 04:08 AM

Quote:

Originally Posted by NAForever

What a relief. About after how many over revs during break-in would you say would damage it? I'm thinking about putting the car in D just to be safe...

Dude, relax. It's an M3!!! Your car is not going to quit on you because you let her have some fun.
Forget the D and give her some from time to time, just warm her up properly and she will be happy.

Leonardo629 · 11-17-2011, 04:25 AM

If the car is fully warmed up (ie, oil temp needle in the middle), then you should be fine...

creepy coupe · 11-17-2011, 05:42 AM

It has a soft cut rev limiter fitted, all's well.

M3SQRD · 11-17-2011, 06:20 AM

Not sure how DCT would make an aggressive redline downshift in S mode if you are coming to a stop, even under hard braking? Yes, it will automatically downshift as the road speed drops but, at least in my two e92 M3s, it performs the downshift at the lowest possible speed for a given gear, not the highest speed. I've never had DCT automatically drop to first, especially directly from third, until the road speed is < ~5 mph.

RizOne · 11-17-2011, 06:21 AM

If it was a manual 6 speed then possibly a problem, with DCT it is not.

///My5UV · 11-17-2011, 06:50 AM

It's toast now, you should just give it away to me... I'll take good care of it.

What color is it?

Mr. ///M3 RD · 11-17-2011, 07:53 AM

Quote:

Originally Posted by NAForever

Apparantly the DCT will downshift for you when slowing down even in sequential mode

Long story short, I thought I was in 3rd gear, DCT puts me to 1st gear. I accidentally redlined it for a fraction of a second. It occured at about 200 miles, should I be worried? I was planning on keeping this one for over 100k miles...

I'm following all the general break-in procedures: highway and city, different revs and speeds, no WOT... I'm really anal about making my cars perfect and now I'm kinda freaking out.

No harm done dor that fraction of a second

no worries

cole328 · 11-17-2011, 08:01 AM

personally, I would sell it asap...no way that an M3, a pure bred race car, should ever hit redline.... :-) Dude, take a complete chill pill and enjoy the damn car.

ChrisK · 11-17-2011, 08:14 AM

DCT Money Shift!

1sikbmr · 11-17-2011, 08:19 AM

Quote:

Originally Posted by ///My5UV

It's toast now, you should just give it away to me... I'll take good care of it.

What color is it?

Nine · 11-17-2011, 09:13 AM

I'm a bit confused, when you say redline ...what RPM are you talking about? It takes a bit of effort to get to the actual redline, if the car is cold it won't even let you get there...

Grail05 · 11-17-2011, 09:16 AM

hahaha your lucky you have a DCT....

like everyone else says...

YOU WILL BE FINE...

but let me clear things up...

im guessing

your car is new with less than 1200 miles... and trying to avoid the redline? and trying to follow the break in period.. correct?

your rpm can be in the red line for several seconds as long as your not doing to money shift... SINCE you have a dct you cant money shift on a DCT anyways...

Templar · 11-17-2011, 09:23 AM

Quote:

Originally Posted by Nine

I'm a bit confused, when you say redline ...what RPM are you talking about? It takes a bit of effort to get to the actual redline, if the car is cold it won't even let you get there...

+1

I am also confused... How exactly did it redline when you were slowing down?

Sure, when I hit the brakes the car will slow down and start to downshift. Unless I slam the gas again though, it won't redline. Also, even if you press the gas past the depression point, you will still need to downshift in order to get the best possible gear, then it will redline pretty quickly. Still, none of this involves you braking. I am not seeing how what you are describing is possible.

Either way, it's not a big deal, the car will be fine.

spdy330 · 11-17-2011, 09:33 AM

Dont worry anymore and congrats!

mmm def · 11-17-2011, 09:48 AM

they actually redline it at the factory before it leaves the plant for testing.

jphughan · 11-17-2011, 10:39 AM

I know this isn't the nature of the OP's issue, but does anyone know whether the dynamic redline that you see when the car starts cold is actually enforced by the ECU with a fuel cutoff or just serves as a "You'd be a moron to rev this high at your current engine/oil temp" signal? Obviously I don't want to test on my own car but I'm curious whether anyone has either found out accidentally or knows the answer from a reliable source.

11-17-2011, 02:55 AM	#1
BeamingE39 Second Lieutenant 16 Rep 212 Posts Drives: slower than I'd like Join Date: Sep 2011 Location: Southern California iTrader: (0)	Accidental redline during break-in Apparantly the DCT will downshift for you when slowing down even in sequential mode Long story short, I thought I was in 3rd gear, DCT puts me to 1st gear. I accidentally redlined it for a fraction of a second. It occured at about 200 miles, should I be worried? I was planning on keeping this one for over 100k miles... I'm following all the general break-in procedures: highway and city, different revs and speeds, no WOT... I'm really anal about making my cars perfect and now I'm kinda freaking out.
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11-17-2011, 03:15 AM	#2
-=Hot\|Ice=- Been There, Done That. 654 Rep 4,728 Posts Drives: 2013 BMW M3 Join Date: Jan 2008 Location: Maryland iTrader: (0)	You'll be fine.
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11-17-2011, 03:24 AM	#4
duk ///M 158 Rep 3,195 Posts Drives: 2011 AW/FR 6MT E92 Join Date: Jun 2007 Location: Irvine, CA iTrader: (0)	trade it in now! ull be fine __________________ 2011.5 AW/FR E92 M3 6MT
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11-17-2011, 03:27 AM	#5
persian54 Lieutenant General 923 Rep 15,818 Posts Drives: M760/G83M4 Join Date: Jun 2009 Location: The Valley, SoCal iTrader: (298)	Sorry you should get rid of it not way a high reving M3 engine will last now that it's been redlined! __________________ From E93 335i to E89 Z4 to E93 M3/E89 Z4 to E350/SL550
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11-17-2011, 03:29 AM	#6
BeamingE39 Second Lieutenant 16 Rep 212 Posts Drives: slower than I'd like Join Date: Sep 2011 Location: Southern California iTrader: (0)	What a relief. About after how many over revs during break-in would you say would damage it? I'm thinking about putting the car in D just to be safe...
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11-17-2011, 04:25 AM	#8
Leonardo629 Lieutenant Colonel 168 Rep 1,792 Posts Drives: 2013 M3 Coupe Join Date: Sep 2006 Location: Taiwan iTrader: (10)	If the car is fully warmed up (ie, oil temp needle in the middle), then you should be fine...
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11-17-2011, 05:42 AM	#9
creepy coupe Lieutenant General 1867 Rep 13,043 Posts Drives: BMW M340I G20 Join Date: Aug 2007 Location: UK iTrader: (2) Garage List 2015 BMW 435d [0.00] 2009 335i [0.00]	It has a soft cut rev limiter fitted, all's well.
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11-17-2011, 06:20 AM	#10
M3SQRD Major General 2164 Rep 5,548 Posts Drives: E92 M3,G20 330ix,F22 240iX,F82 Join Date: Jun 2009 Location: Mid-Atlantic iTrader: (11)	Not sure how DCT would make an aggressive redline downshift in S mode if you are coming to a stop, even under hard braking? Yes, it will automatically downshift as the road speed drops but, at least in my two e92 M3s, it performs the downshift at the lowest possible speed for a given gear, not the highest speed. I've never had DCT automatically drop to first, especially directly from third, until the road speed is < ~5 mph.
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11-17-2011, 06:21 AM	#11
RizOne Private First Class 60 Rep 179 Posts Drives: F10 M5 Join Date: Oct 2011 Location: Nj iTrader: (0)	If it was a manual 6 speed then possibly a problem, with DCT it is not.
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11-17-2011, 06:50 AM	#12
///My5UV Lurker 78 Rep 812 Posts Drives: YMB F80, SS E90 Join Date: Nov 2010 Location: Austin iTrader: (0)	It's toast now, you should just give it away to me... I'll take good care of it. What color is it? __________________
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11-17-2011, 08:01 AM	#14
cole328 Second Lieutenant 15 Rep 274 Posts Drives: 2011 M3 Convertible Join Date: Oct 2010 Location: FL iTrader: (0)	personally, I would sell it asap...no way that an M3, a pure bred race car, should ever hit redline.... :-) Dude, take a complete chill pill and enjoy the damn car.
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11-17-2011, 08:14 AM	#15
ChrisK Major General 4450 Rep 7,594 Posts Drives: '19 M2C Join Date: Jun 2007 Location: Chicagoland iTrader: (7) Garage List 2019 BMW M2C [7.00] 2015 Porsche Macan S [0.00]	DCT Money Shift! __________________ www.ReTuneTheDeTune.com 2019 M2 Competition (Sunset Orange)
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11-17-2011, 09:13 AM	#17
Nine Banned 49 Rep 1,922 Posts Drives: Not ZCP, FML. Join Date: May 2010 Location: DC, Miami, NYC iTrader: (2)	I'm a bit confused, when you say redline ...what RPM are you talking about? It takes a bit of effort to get to the actual redline, if the car is cold it won't even let you get there...
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11-17-2011, 09:16 AM	#18
Grail05 Putcha ang ganda... 281 Rep 5,441 Posts Drives: 17 F82 M4 Join Date: Feb 2010 Location: Los Angeles, Brea CA. iTrader: (10)	hahaha your lucky you have a DCT.... like everyone else says... YOU WILL BE FINE... but let me clear things up... im guessing your car is new with less than 1200 miles... and trying to avoid the redline? and trying to follow the break in period.. correct? your rpm can be in the red line for several seconds as long as your not doing to money shift... SINCE you have a dct you cant money shift on a DCT anyways... __________________
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11-17-2011, 09:33 AM	#20
spdy330 Major General 530 Rep 6,149 Posts Drives: 05 Tundra, 15 FIT, 17 CRV Join Date: Dec 2009 Location: Chino Hills, CA iTrader: (163)	Dont worry anymore and congrats! __________________ If you will be purchasing ANY AT&T services online or in store could you mention that you were referred by me? My Employee Referral ID is eo4489. This would be a great help and it costs you nothing, thank you!
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11-17-2011, 09:48 AM	#21
mmm def Colonel 144 Rep 2,610 Posts Drives: 21 330, 19 ND2 RF, 11 RX350 Join Date: Dec 2006 Location: NJ iTrader: (0)	they actually redline it at the factory before it leaves the plant for testing.
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11-17-2011, 10:39 AM	#22
jphughan Brigadier General 594 Rep 4,488 Posts Drives: '16 Cayman GT4 Join Date: Mar 2011 Location: Austin, TX iTrader: (0)	I know this isn't the nature of the OP's issue, but does anyone know whether the dynamic redline that you see when the car starts cold is actually enforced by the ECU with a fuel cutoff or just serves as a "You'd be a moron to rev this high at your current engine/oil temp" signal? Obviously I don't want to test on my own car but I'm curious whether anyone has either found out accidentally or knows the answer from a reliable source. __________________ '16 Cayman GT4 (delivery pics, comparison to E92 M3 write-up) Gone but not forgotten: '11.75 M3 E92 Le Mans \| Black Nov w/ Alum \| 6MT (owned 5/2011 - 11/2015)
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