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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Help cloud of smoke from exhaust



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      03-03-2012, 09:16 PM   #1
qmup508
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Help cloud of smoke from exhaust

So after I installed my fmic and exhaust. I drove it for about a hr not really running hard or anything just regular driving on the highway about 70 mph. I pulled into a restaurant and sat in the car for about 10 mins. Then I notice my car is smoking (white) a lot from the exhaust an it smells like oil burning. So I pulled off and drove home then nothing. This is the second time this has happened but it seems like after a long drive it will happen. Any ideas please chime in I have my jb4 on map 5 auto tune a.a charge pipe, bov berk tech cat less down pipe, a.e exhaust cat-less, ets fmic , bms dci. I just had all these parts installed to. It would suck to have to take most of it off for a check up.
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      03-03-2012, 10:18 PM   #2
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New exhausts sometimes take a while to burn off the oil on the steel. Some exhausts stink for a few days, some never. If it doesn't quit after 3-4 days, you may need to have someone take a look at it.
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      03-03-2012, 10:26 PM   #3
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Maybe the oils on your exhaust is just burning off... :-/ A lot of times when manufactures package exhausts they coat them in a grease/oil so it doesn't rust or stick to the plastic wrap/pkg.
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      03-03-2012, 10:30 PM   #4
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Quote:
Originally Posted by JamesM3M5
New exhausts sometimes take a while to burn off the oil on the steel. Some exhausts stink for a few days, some never. If it doesn't quit after 3-4 days, you may need to have someone take a look at it.
Ah forgot to mention that I bought the exhaust from a forum member that has already been used.
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      03-03-2012, 10:43 PM   #5
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were any cats removed when installing this new exhaust? they could have just been masking a problem
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      03-03-2012, 10:49 PM   #6
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previous owner had something in the exhaust?

id put off the panic attack moments until 3-4 days. and its days, you need to cycle whats ever in there.

i had a heart attack moment in my audi, but it turned out it was from the previous owner, his turbos were on the way out.

explains why he parted out the car so cheap............
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      03-03-2012, 11:08 PM   #7
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you may not be used to some of the normal symptoms of catless exhaust yet... i wouldnt worry too much about it
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      03-03-2012, 11:13 PM   #8
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Quote:
Originally Posted by kkashanchi View Post
you may not be used to some of the normal symptoms of catless exhaust yet... i wouldnt worry too much about it
white smoke and a stench of burning oil are not 2 attributes of a catless exhaust.


now, black smoke, well, thats always a good time. nothing else says "fuck you pruis" like black smoke.
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      03-04-2012, 12:13 AM   #9
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Quote:
Originally Posted by tofu-
were any cats removed when installing this new exhaust? they could have just been masking a problem
Yes the cats were removed
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      03-04-2012, 12:18 AM   #10
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Quote:
Originally Posted by hemi to e90
previous owner had something in the exhaust?

id put off the panic attack moments until 3-4 days. and its days, you need to cycle whats ever in there.

i had a heart attack moment in my audi, but it turned out it was from the previous owner, his turbos were on the way out.

explains why he parted out the car so cheap............
That's what I'm hoping. Maybe I am having a panic attack but it's hard not to. I'll give it a few more days an see if anything changes. My biggest concern is the turbos. If the seal is broken then fml
Just strange that it only happens on a long idle never a short one or while driving
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