The Race Exhaust on my Huracan was amazing. The backfires sounded like a shotgun, it's is going to be hard to beat that system. The Akropovic is tame by comparison.I'm also interested in the Akrapovic STO exhaust sound. My valves have been open in my STO and they sound just OK, compared to my 2015 Huracan with the racing exhaust...no comparison!!!! That's the biggest issue with the STO in my opinion.
The Akro STO and EVO exhaust are the same exhaust system.they don't. i was told it's just a bit more backfire .. same behaviour like the EVO Akra exhaust.