Do BMWs have false twin exhausts?
29 November 2005, 01:40 PM
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Do BMWs have false twin exhausts?
I've been behind a 3 series a couple of times with twin exhausts (small ones next to each other) and thought that the right hand one looked like it stopped before the silencer. Is this true or am I just seeing things?
29 November 2005, 02:21 PM
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29 November 2005, 02:25 PM
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Originally Posted by DarkStar66
I've been behind a 3 series a couple of times with twin exhausts (small ones next to each other) and thought that the right hand one looked like it stopped before the silencer. Is this true or am I just seeing things?
U will see when he increases revs.
I cant remember why, but OE exhaust on certain ones do this.
29 November 2005, 02:29 PM
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"Engine vacuum operates a valve in the exhaust system that responds to engine speed and load. It varies a movable element located in the right-side resonator for a sporty exhaust note under hard acceleration or when downshifting enthusiastically."
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29 November 2005, 09:25 PM
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Originally Posted by jonny gav
according to bmw it helps give better torque low down, my 328 E46 has it.
30 November 2005, 01:38 PM
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Well, you learn something new every day.
I bet those exhausts are expensive to replace. Although by the time it's due it'll be replaced with a cheap DTM style jobbie!
I bet those exhausts are expensive to replace. Although by the time it's due it'll be replaced with a cheap DTM style jobbie!
01 December 2005, 10:09 PM
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My E36 328 coupe was like this. I put the car on the lift once and saw that it had dual pipes running the whole length of the car.... I think my comment went something like "oh cr@p that looks expensive" !!!
Great sounding motor mind...
Great sounding motor mind...
01 December 2005, 11:00 PM
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Originally Posted by john banks
"Engine vacuum operates a valve in the exhaust system that responds to engine speed and load. It varies a movable element located in the right-side resonator for a sporty exhaust note under hard acceleration or when downshifting enthusiastically."
Correct john the 330 ci does exactly that, the one from 2002 defo does
02 December 2005, 09:55 AM
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Originally Posted by jonc
I've looked under my 325 (e46) up to the headers and there are twin pipes all the way up to the headers, 3 cylinders exhaust to one pipe the other 3 to the other pipe.
03 December 2005, 08:03 PM
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Should see the exhaust setup on the 840. Separate system for each bank, one on each side of the car exiting with a twin pipe on each rear silencer. 3 silencers, 2 cats, 4 lambda sensors 
Think the setup on the E39 M5 is much the same.
Think the setup on the E39 M5 is much the same.
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