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1,6,7,8 - Series and Mini Cooper General Chat related to models that do not fit into particular categories above. Please try to put your discussion in more appropriate sections. This section does cover the 1 Series, MINI Cooper and 8-Series vehicles: BMW 830i, BMW 840Ci, BMW 850i, BMW 850Ci, BMW 850CSi, M8, Alpina B12, BMW CS Concept and others.

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Old 01-21-2010, 06:19 AM   #1 (permalink)
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Anyone done a muffler delete on a E38 740iL

I stumbled across this on youtube
Just wondering if anyone has done this, or has any apprehension about doing this?
I thought there was supposed to be some back pressure to avoid the exhaust valve burning out, or doesn't the rear muffler play a role in this?
It does seem to give the car a better note, but how noisey would it be?
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Old 01-21-2010, 06:28 AM   #2 (permalink)
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No the muffler plays no part in that. If you unbolted the exhaust right at the heads (manifolds and all) you might burn a valve as a result ... as long as you got the manifolds and a couple feet of pipe after that, you're fine.

That said, on a e38? Ruins the car for me. It's supposed to be a cruiser luxo-barge (and it's one of the best there ever was), not a Honda Civic driven by a 16 year old pimply-faced kid.
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Old 01-21-2010, 06:42 AM   #3 (permalink)
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It is a very quiet car inside and out, almost too quiet if you know what I mean.
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Old 01-21-2010, 06:44 AM   #4 (permalink)
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Yeah but it was meant to be that way. I don't know, but it's not a car I'd ever change the exhaust on.

I mean I like a loud car as much as the next guy, but I probably wont ever touch the exhaust on my 318 either ... most of my driving is highway and with how short the gears are I think I'd go crazy after two days.
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Old 01-21-2010, 06:48 AM   #5 (permalink)
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Don't let that worry you, I went crazy years ago. Now its just a matter of maintaining the insanity.
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