I'm getting an exhaust leak from where the head pipe slips over the manifold stub. Tried wrapping the stub pipe with the yellow Teflon tape and that lasted about 5 miles and blew out. Was thinking of wrapping it in tinfoil next.
What would be perfect is some kind of a high heat O-ring where the head pipe sits against the exhaust flange.
Today was the first time I was able to really ride after installing the tuned pipe a few weeks ago and let me tell you, if you have any doubts as to whether a tuned pipe adds power IT DOES! Before the Teflon tape let go I was cruising at 29-31 on the flats and uphill grades that usually dropped me down to around 20 I was holding steady at 27 all on a standard 44T sprocket.