ok i just got my exhuast done and i told him what has been going on that it keeps getting lose. i know to blame the welder. he just didn't know how to weld. well he pointed out that i need to have a flex pipe. I know about the spring loaded bolt and yes it is there. he insist that i get it. I've never seen it on my civic before...he wanted me to pay him $95 for it installed. i skipped it...D Grade said:What are you talking about? A "flex section" for an exhaust? Shouldn't be a problem if you are still using the spring loaded bolts where the header and cat meet.