There are 2 exhaust upgrades from the base M6. Neither adds any power.
1. Competition package adds a throaty tone. I'm a big fan of it. In fact so many people like it, 650 owners and non-ZCP M6 owners install them
2. You can buy a "M Performance Exhaust" (MPE) from BMW (also port installed in the original order/build). This exhaust is the akrapovic evolution exhaust, a full titanium system starting from the downpipes. Only difference between the Akra and BMW version is the tips. BMW version has M logo on each tip. The Akra/MPE has an amazing exotic sound. Personally, I think it sounds like an exotic car. Akrapovic claims a 10 HP gain, which I highly doubt.
Last edited by Flying Ace; 05-13-2019 at 11:14 PM..
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