I removed my muffler 3 years ago (2006 Hi-Roof 140) and replaced it with a straight piece of 2 1/2" all the way to the rear. It hangs on homemade rubber hangers and runs under the rear axle. No bends no back pressure.
My wife can't tell the difference in sound and I'm sure you can't either. I seems that the Turbo kills the noise. I can hear it talk to me in 2nd gear on a steep downhill but idleing in your driveway you won't know.
Fred
I've been patching my 2004 exhaust system with universal parts. So far the OEM muffler has been holding well enough.Are you guys putting on OEM ones or just universal mufflers?
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Pieces of pipe, perf strap, and sheet stock.What are you patching it with?
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I added my Monel baling wire support slings to prevent just such problems. The slings have saved me a couple times now. I don't notice any additional noise from the supports even without rubber mounts, but my cargo truck is OEM as to insulation/sound deadening on the floor so it's not quiet to begin with.had my muffler fall off in an intersection, ran over it with my passenger rear wheel. scared the **** out of me. cracked the muffler so I had to get a new one. ...
False assumptions. Most diesel vehicles will see minimal performance increases by cutting the muffle and CAT out. In fact many will see reduced performance due to turbo lag (seems counter intuitive, but its true). The turbo is an exhaust restriction, but its necessary to harness the exhaust flow to generate boost. The Turbo needs some back pressure to allow for timely spool up. Go figure.Eatacactus, did you notice any difference in performance or MPG? I would think without a muffler both would go up.
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I didn't put enough miles on the van before building the exhaust to notice a difference. I did it mainly for the reliability (one less thing to rot) and the minor change in exhaust tone.Eatacactus, did you notice any difference in performance or MPG? I would think without a muffler both would go up.
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I think everyone who builds proper drag cars would completely disagree with your statements.False assumptions. Most diesel vehicles will see minimal performance increases by cutting the muffle and CAT out. In fact many will see reduced performance due to turbo lag (seems counter intuitive, but its true). The turbo is an exhaust restriction, but its necessary to harness the exhaust flow to generate boost. The Turbo needs some back pressure to allow for timely spool up. Go figure.
The muffler on these vans is quite large, and likely provides minimal restriction.
Drag cars are a different matter, performance are engines in general. The sprinter is not getting a re-tune, so fuel and boost levels are not changing. It still has the same small-ish turbo which is designed to spool quickly and make good boost early.I didn't put enough miles on the van before building the exhaust to notice a difference. I did it mainly for the reliability (one less thing to rot) and the minor change in exhaust tone.
I think everyone who builds proper drag cars would completely disagree with your statements.
I agree. It doesn't need to provide much restriction because it doesn't need to reduce much noise. That is somewhat verified by the fact that it can be removed with no appreciable increase in noise.False assumptions. Most diesel vehicles will see minimal performance increases by cutting the muffle and CAT out. In fact many will see reduced performance due to turbo lag (seems counter intuitive, but its true). The turbo is an exhaust restriction, but its necessary to harness the exhaust flow to generate boost. The Turbo needs some back pressure to allow for timely spool up. Go figure.
The muffler on these vans is quite large, and likely provides minimal restriction.