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      10-14-2012, 10:33 PM   #1
Nicname
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Strange burning smell after hitting 100mph

So 2 nights ago I raced a 335i (won) but as i accelerating rapidly to 100mph, I noticed a strange burning smell. After a few minutes the smell went away but I was wondering if it was just the smell of burning oil or if it was something else.

EDIT: Did some runs and I've found the case of the smell to sometimes occur after I downshift... I have a DCT so I would assume the car is perfectly matching revs so... any advice?
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Last edited by Nicname; 10-22-2012 at 01:22 AM.
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      10-14-2012, 10:39 PM   #2
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      10-14-2012, 11:24 PM   #3
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Clutch or tires?
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      10-15-2012, 12:04 AM   #4
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Quote:
Originally Posted by Sean05 View Post
Clutch or tires?
Its definitely not the clutch. I know what that smells like
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      10-15-2012, 07:43 AM   #5
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Cats ??!!
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      10-15-2012, 08:15 AM   #6
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Quote:
Originally Posted by Nicname View Post
Its definitely not the clutch. I know what that smells like
Then it could be anything.. too many burning smell tires, brakes, clutch, cats, excessive gas rich...anything... . if it did not gave you any cel dont worry about it.. at this point it will be hard to pin point on exactly what the problem is... buring smell could be anything.

post on what mods you have... with your description its not detailed enough for us to give you any insight.

could be hot brakes/pads. Like i said could be anything.
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      10-15-2012, 08:54 AM   #7
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do you have 19s?
check your front tire wheel wells.
maybe you were rubbing the front of the wheel well liners at a high speed.
i know i do at very high speeds since i do not have brake ducts so the air just pushed my fender liner towards the tire
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      10-15-2012, 08:59 AM   #8
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Bad breath ???
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      10-15-2012, 09:29 AM   #9
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      10-15-2012, 09:50 AM   #10
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probably jsut combo of everything from beating on it
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      10-15-2012, 11:13 AM   #11
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I do have 19's but I've never had a problem with rubbing. As for my other mods, all I have is a gintani exhaust and a velos tune. I did some sprinted runs to see and the smell only occurs after I pass 5/6k rpms and hit close to 80-90. My oil temperature remains around 210 so idk :
No CEL or errors so ill just wait till my next service to bring it up.
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      10-15-2012, 04:35 PM   #12
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if it smells like rotten eggs, it's the cats and that means you drive it like a grandma. it'll go away after you thrash on it a few times. I had that smell when I put it on the dyno and after the 3rd pull, went away
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      10-15-2012, 06:20 PM   #13
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About. I've had a weird smell after running it hard too. It was over 30k miles ago. I was running it hard. Never had a problem and haven't smelled it since.
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      10-15-2012, 06:29 PM   #14
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maybe the smell came from the 335i getting smoked so badly
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      10-15-2012, 06:59 PM   #15
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I farted
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      10-15-2012, 08:01 PM   #16
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I was running it hard. Never had a problem and haven't smelled it since.
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      10-16-2012, 11:17 AM   #17
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Surprised no one ripped into OP for street racing..
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      10-16-2012, 11:55 AM   #18
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its because he beat a 335i
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      10-16-2012, 01:57 PM   #19
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Quote:
Originally Posted by SGMe90
if it smells like rotten eggs, it's the cats and that means you drive it like a grandma. it'll go away after you thrash on it a few times. I had that smell when I put it on the dyno and after the 3rd pull, went away
Could be? I've ripped it a few times but maybe I need to do her some more justice
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      10-16-2012, 02:02 PM   #20
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That was the flux capacitor when you hit precisely 88 mph!
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      10-22-2012, 01:22 AM   #21
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Did some runs and I've found the case of the smell to sometimes occur after I downshift... I have a DCT so I would assume the car is perfectly matching revs so... any advice?
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      10-22-2012, 01:26 AM   #22
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Probably exhaust fumes. Between shifts the car will run a bit rich as well when the throttle closes.
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