Quote:
Originally Posted by oldman
Already said, many times that the m6 needs primary cats! I don’t know is bullets would work, I don't know if something like the Borla dual muffler midpipe will work. High flow cats work. Don't think any exhaust work outside of adding cats will work.
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Will work as in what? For sound, or are you talking drivability? For sound, I decided to go with (2) SLP loudmouth II mufflers. The car will be going to the muffler shop shortly for all new 3" from headers back, with an H-Pipe and the SLPs. We will see what it sounds like. As far as drivability without cats, I have had no issues so far, drives just like stock for me, even in the low low rpms
