Originally Posted by BalanBro

I doubt it's all that bad, and I bet it's even within 1 or 2 hp of other products. Nothing about it looked like a bad design, although folks say it's a bit quiet. Probably goes well with HFC's. People just buy other exhausts they are cheaper or give a particular "look" (basically why I bought mine).

Also from what I understand, true duals v. H-pipe v. X-pipe shouldn't make any real difference in performance since the VQ is an even firing engine. It's more for tuning sound than anything else.