Thanks for all the suggestions, right now my FabSpeed x-pipe is already cat less but with resonators welded to OEM primary cat. So I assume if I get rid of the x-pipe's resonators and OEM primary cat will be good, right?
Then I think the only option I got will be full EVO then...
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MacakaCheck
16 F83 M4
14 F12 650i
11 E93 M3
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