Quote:
Originally Posted by Jimjamz
Is that only if you do the link pipes? If I only got the Akra slip on is any tune required? I'd expect not?
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Yeah, the link pipes replace the section where the OPF is located on the Euro models. There's still a cat located on those pipes in the US version though.
https://www.realoem.com/bmw/enUS/sho...diagId=18_1090
But the M3 has the same setup and it doesn't require a tune, so it sounds as though the tune is specifically for the OPF like the other guys said.