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#1
05-13-2003, 11:42 PM
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diesel exhaust systems
I lost my rear muffler today.... car sounds better too....
Actually it is not loud at all, just a bit of a sporty sound (and the car is 30lbs lighter). Before I go and spend a bunch of $$$ on replacement parts, does anyone have advice on the subject?? Is there such a thing as "free flow" for diesels??? Any 240 driver will understand where I am coming from, that is, to pick up a horse or two would be nice... But, if not I'll stay with stock set up. anybody have any advice?? thanks dave 
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#2
05-13-2003, 11:46 PM
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I don't know of any pre-built systems, but IMHO on a diesel, the fewer restrictions you have in the exhaust system, the better. You don't have to worry about burning valves or anything like that.
 Essentially, if you went to a bigger size (all the way from the manifold) and eliminated the muffler altogether, you'd be okay. Just make sure that it's legal to straight-pipe the engine; many states don't allow it...in CA, though, all you need is some form of restriction, so it's okay to straight-pipe a turbo. My $.02...good luck!
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2001 VW Jetta TDI, 5 speed, daily driver 1991 Ford F-350, work in progress 1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D Spark-free since 1999
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#3
05-14-2003, 12:56 AM
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Just weld on a straight pipe with a turned down end where the old muffler was. Get that exhaust and some noise out from under the car and reduce back pressure a smidge all with a short pipe scrap .
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Diesel-guy
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#4
05-14-2003, 11:13 AM
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Dave,
I lost the rear muffler on my 220D and put on a straight pipe. Slightly louder but never hurt the engine. The front muffler is enough for me. Did the same thing to my 300SD and it doesn't sound any louder. Maybe because of the turbo on the 300SD?? P E H Last edited by P.E.Haiges; 05-14-2003 at 07:20 PM.
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#5
05-14-2003, 12:42 PM
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I had completely removed mine past the turbo down pipe with no problems at all. I just put mine back on for lower sound levels (Although I LOVED the diesel sound!)
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#6
05-14-2003, 01:55 PM
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Quote:
I don't plan on modifying the exhaust on my 123 just for the heck of it, but if I ever need to replace it, I'll just go for a straight exhaust...no harm and may even pick up a horsepower or two
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