hey all, I know countless bikes are running open pipes but it seems like I have always heard that engines need some sort of backpressure....As long as you rejet to accomdate the engines deeper breath is it still harmful to an engine? I have a set of BuBs now and I love em, however I want to go into a little bit more of a custom direction. Maybe the iron city cycle fishtails/wrapped header or possibly even a straight cut of brass tubing clamped to the end of the pipes with a nice wrap. Was also thinking of flexible stainless steel instead of wrap. Any suggestions?
