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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > Before you ask why your exhaust is broken and why only one side is dirty: READ THIS!
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      03-06-2019, 09:38 PM   #89
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Quote:
Originally Posted by smithf80 View Post

It is completely normal for exhaust gas to come out of only one of your two exhaust tips, and for only one to look dirty most of the time.

The behavior may be normal under given circumstances, but what the circumstances are caused by may not be.

I thought this was normal for awhile after seeing this post, but turns out my engine oil has gone REALLY bad due to it running short distances in cold weather without enough time for the oil to warm up and caused it to get really thick.

if your oil temp gauge hasn't moved up at least a quarter after 15 mins of driving in cold (-20C or below) or one of your exhaust is still cold after a 15 min trip then get it checked.
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      03-07-2019, 12:36 AM   #90
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some cars have an update where the flap will not open after some time when doing cold start. for the x40i models
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      04-09-2019, 11:23 AM   #91
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FYI with MPPSK installed, you do not have this problem.
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      06-11-2019, 08:52 PM   #92
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Quote:
Originally Posted by F30ZHP View Post
FYI with MPPSK installed, you do not have this problem.
I have MPPSK installed and while the left pipe with exhaust flap opens in Sport modes (once the engine is warm), it does not in Comfort and Eco modes unless one accelerates hard. I use Carly for BMW Pro, and open the flap in Comfort mode once the engine is warm. I mainly do freeway driving, and so having the flap open helps with power and efficiency. Both exhaust tips are therefore the same colour.
Closed: Open:
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A turbo: exhaust gases go into the turbocharger and spin it, witchcraft happens and you go faster.” J Clarkson.

Last edited by DrGadget; 06-11-2019 at 09:00 PM..
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      06-11-2019, 10:40 PM   #93
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Quote:
Originally Posted by DrGadget View Post
I have MPPSK installed and while the left pipe with exhaust flap opens in Sport modes (once the engine is warm), it does not in Comfort and Eco modes unless one accelerates hard. I use Carly for BMW Pro, and open the flap in Comfort mode once the engine is warm. I mainly do freeway driving, and so having the flap open helps with power and efficiency. Both exhaust tips are therefore the same colour.
Closed: Open:
Interesting. Both my tips are the exact same color and my car is stock.
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      06-15-2019, 08:54 PM   #94
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Quote:
Originally Posted by F30ZHP View Post
Interesting. Both my tips are the exact same color and my car is stock.
Ah yes ... but the small production run (100 of them) ZHP model has the following as standard, and you may drive it mostly in Sport modes.
•Black Kidney Grills
•Carbon Fiber Mirror Caps
•Carbon Fiber Rear spoiler
•M performance power kit
•M performance exhaust
•Limited slip differential (lsd)
•Rear diffuser
All ZHP are RWD (75 manual 25 automatic)
Only 100 produced
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A turbo: exhaust gases go into the turbocharger and spin it, witchcraft happens and you go faster.” J Clarkson.
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      07-20-2019, 01:25 AM   #95
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good info
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      07-24-2019, 03:19 AM   #96
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      07-24-2019, 09:59 AM   #97
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So what is the secret to get the exhaust valve to stay open on f36 models?
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      07-25-2019, 09:49 AM   #98
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great
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      08-02-2019, 10:42 PM   #99
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Quote:
Originally Posted by jack10525 View Post
So what is the secret to get the exhaust valve to stay open on f36 models?
See the response here:
https://f30.bimmerpost.com/forums/sh...6&postcount=35

If you have Parking Assistant, do not fall for the suggestion to remove fuses 146 and 147 in the trunk as PA will be disabled ... but yes, the flap will stay open. Pulling the flap actuator plug will keep the flap open, but another person posted that after 24 hours the ECU disabled the actuator, requiring $ervice centre intervention. Others have written about using a JB4.

Over to you .....
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