05-06-2012, 05:53 AM | #1 |
Private First Class
7
Rep 106
Posts |
335i exhaust
I noticed that when I turn on my car in the morning black fumes come from the right exhaust only as if the left one is not connected is this normal? Also my exhaust tips get black really fast is this because the car is a twin turbo?
|
05-06-2012, 06:09 AM | #2 |
Private First Class
22
Rep 198
Posts |
lol your 335i has a twin turbo?
|
Appreciate
0
|
05-06-2012, 06:49 AM | #3 |
First Lieutenant
48
Rep 385
Posts |
It's normal for exhaust to flow out one side only because the other is closed off until a certain throttle/speed. I believe it's for emissions reasons.
|
Appreciate
0
|
05-06-2012, 07:27 AM | #4 |
New Member
0
Rep 7
Posts |
|
Appreciate
0
|
05-06-2012, 08:45 AM | #6 | |
Private
4
Rep 80
Posts |
Quote:
The new M5 and M6 both use a 4.4L twin-turbo V8, replacing the old V10. The N20 and N55 engines used in the 328i and 335i, as well as other models, have single, twin scroll turbochargers, hence the "TwinPower Turbo" moniker.
__________________
DELIVERED: 2012 F30 328i Sportline, 6MT, BSM, Black Dakota Leather/Red Highlight, Coral Red matte trim, Black Highgloss trim, Prem. Sound Package, Tech. Package
|
|
Appreciate
0
|
05-06-2012, 09:12 AM | #7 | ||
Second Lieutenant
9
Rep 213
Posts |
Quote:
__________________
2014 Range Rover HSE- Fuji White/Ebony
2014 MB E550 Sport Sedan Sold: 2011 328xi; 2013 X3 35i; 2013 X5 50i |
||
Appreciate
0
|
05-06-2012, 11:04 AM | #8 |
Lieutenant General
1312
Rep 10,185
Posts |
The left exhaust pipe valve will be closed at low RPM for Acoustic reasons/
It reduced low RPM droning sounds from the exhaust
__________________
BMW if you are reading, I need a job, Please. |
Appreciate
0
|
05-06-2012, 08:37 PM | #12 | |
Major
32
Rep 1,285
Posts |
Quote:
The black sooty deposit shows up more quickly with heavy throttle use; the engine mapping is richer at WOT, normally aspirated or force-fed. |
|
Appreciate
0
|
05-06-2012, 10:02 PM | #13 | |
✚
102
Rep 1,237
Posts |
Quote:
http://www.modified.com/tech/modp-09...ng_effect.html |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|