A BP is silky smooth compared to the piece of shit truck motors i'm working with.

Yeah that was fun.

I thought you ran it unsupported as I supplied it, with no flex and rather long at that. or did you make a clamp after it cracked the first time?

I VTA on my V6, but with a flex in the pipe as close to the EWG as I could put it and a hard brace to the downpipe towards the loud end of the pipe.

I use vibrant's smooth liner flex but Shuiend's cracked along two of the bellows.