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Power Strokes
6.7 Aftermarket
6.7 and FTE resonator??
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[QUOTE="CATDiezel, post: 1459472, member: 4387"] Yes! As much as humanly possible. I have it in my 2 car garage and you can now talk in the garage with the truck running.... also no longer echos off every wall around. Im more than pleased with the reduction. As far as mpg Go.... it's exactly the same 12.5 towing my 32ft gooseneck loaded.... nothing changed in those regards. I figured out the noise I think. The M085171 muffler has a "resonator" right in the middle of the entire free flow muffler. It's actually and expansion chamber/drone killer. That would explain the whirly noise affect. If you Google the toy you will understand what noise I'm referring too. [url]https://en.m.wikipedia.org/wiki/Whirly_tube[/url] That link is a round about noise I hear... and explains the lack of consistency in the linear noise one should hear. Im not longer worried about it.... sounds just fine... I just noticed the 1% items 99% of people never hear or see.... problem since birth. Keep in mind the donaldson muffler was designed to be a vertically mounted unit... that's the reason for the expansion chamber right in the middle of the muffler because on a truck it's placed next to the cab most generally. Some are underslung but the majority it was designed for are vertical. Has no affect on reliability, just an explanation of why the expansion is on the M085171 Donaldson. [/QUOTE]
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6.7 Aftermarket
6.7 and FTE resonator??
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