Is this confirmed? I only seen a handful of posts and it wasn't looking promisingThere should be a JB4 update soon for MTs. Hang tight buddy.
100% why I got a catback with a valve. To be loud or louderI did because my Sp1R was too loud catless. But I am tuned
I have the MT firmware if you want itI have been waiting for the update to the jb4 before buying a downpipe. Hopefully that gets updated this year and then I can make the decision. Good luck and let us know as you see updates for the JB4. Thanks