Having home-court advantage to Akrapovic's North American facilities, we work very closely with the company and were able to provide installation and collect some data on the new Evolution system for the F8X M3 & M4 platform. Akrapovic's newly-acquired M4 had just completed getting vinyl wrapped and needed a system installed right away.

As expected from Akrapovic, the systems are very high quality and constructed from full titanium. Everything needed is included with the Evolution systems for a bolt on installation, and installation was a breeze. There are two options of exhaust tips: carbon fiber or titanium. For this M4 we installed the carbon fiber tips, which also feature polished titanium just under the 2x2 weave.To complete the installation, we also replaced the stock diffuser with Akrapovic's matching carbon fiber diffuser.

Because it's made from titanium, this exhaust weighs 25.5lbs less than the OEM steel version. This system has a very throaty and exotic exhaust note while retaining the S55's signature sound. It's also a little louder than other Akrapovic Evolution exhaust systems that we've installed; it's not overbearing, just aggressive. On the dyno we recorded a peak gain of 7whp on 91 octane, this can mean a couple of things: 1) The BMW factory exhaust is very efficient, or 2) The choke point likely is further up at the downpipes. Watch the dyno video below to hear the exhaust for yourself and check out all these photos from the installation. Enjoy!

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