Exhaust mod and Tune - Mercedes-Benz Forum
 
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post #1 of 1 (permalink) Old 05-22-2019, 03:10 AM Thread Starter
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Date registered: Sep 2008
Vehicle: 2000 ML55 sold😢 2013 ML500,😁 2015 C250 estate wagon, 1927 Dodge 4 sedan, 1929 Dodge
Location: Melbourne Australia
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Exhaust mod and Tune

Iíve been missing the beautiful noise my ML55 use to make so I had to do something with this quite monster.
I removed the resonator first, and then Iíve fitted some what I call, back pressure bypass pipes. It has worked out way better than I imagined. While cruising at highway speed itís actually quieter than what it was. But a soon as you put your boot into it, it comes to life like the beast it is. It now has an awesome note to it under hard acceleration but whisper quite at normal driving.
What Iíve done is cut a 2Ē round hole in the exhaust at 90 degrees to the 3Ē pipe just before the muffler. I then welded a 2Ē to 1Ē&1/2 cone reducer perfectly fitted to the 3Ē pipe so there was no intrusion into the main exhaust pipe. It then has an 1Ē1/2 pipe running around into the back of the exhaust tips.
So as soon as the exhaust gets any back pressure it gets diverted through the 1Ē1/2 pipe. The sounds is as good as any high performance muffler around. Itís probably illegal to do it but so is everything else we do these days. Not really sure about whether it made it perform any better because I put an 84kw tune in it at the same time. So between the 2 of them itís definitely going quicker than a stock 500. Iím loving this ML.






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