will this hurt my engine at all?...I know ts loud..but I like it..might just clamp a piece of steel tube to it

 Crap fuel economy, horrible engine manners, a sizeable drop in hp. exhausts are far more science than a bit of pipe.

 

lots of carb tuning involved

Loudness does not equal speed . And you'll find you can only hear the tv at full volume , faintly .

it was cool for half an hour....going to get me a new muffler.

any body know any vance and hines distributers in the uk, im after the competition slip on muffler for my xv...so far it looks like im gonna have to go stateside. anybody got any info thatd be cool

There all over #bay.

 

There's a company called Hi Level that do a large range of aftermarket exhausts . I just got one for the CG , very reasonably priced and the quality looks pretty good .  Check 'em out .

few bits on here

http://www.metriccruisers.co.uk/acatalog/yamaha_accessories.html