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      09-10-2019, 03:59 AM   #2
Ollie RS
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Drives: BMW M2 Competition
Join Date: Apr 2019
Location: Warsaw

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I had the same issue and doubts as you when i collected my M2C. As far as i'm aware, there aren't any solutions for removing the OPF filters without re-mapping the car afterwards which equals loosing your warranty.
I went for the Remus 'Race' OPF back exhaust (which is meant to be one of the loudest systems with OPFs), it makes it significantly better in terms of the note but the loudness is still not comparable to the systems in my previous cars which didn't have OPF filters. I saw that people have started cutting out the resonators as well but that amplifies the metallic sound which isn't for me. I think that leaves me with the downpipes, maybe slightly less restrictive sports cats in the downpipes will be a solution...
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