Quote:
Originally Posted by Tenac
The only real way to tell is to measure it if decibels are more. The real change is the actual tone of the exhaust. That is why with your setup it got very raspy and high pitched. If you did it the other way around you would notice a deeper sound like on my X5MC where all I did was the secondary DPs. It's like fooling the ear when you talk about resonators. The M series use a empty H pip chamber design with nipples so there is no restrictor inside. (at least I've never seen anything other). If you put an X pip your sound would still have been even different than straight. I would recommend putting X if you want the resonator gone. Sadly I no longer have my X5MC or a video of it.
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I'll mention this to the shop guy who's working on it about the X pipe vs. straight. He hasn't worked on a M850 before but a ton of high end cars including the M8. Thanks