if that is true, then i have been running warped valves for about 3 or 4 years now- i like the way these warped valves perform!
i "ride like i stole it" most of the time... the only problem that i have ever had was early on i would jump on the throttle before the engine was at all warm (with injected bikes you can do that, but doesnt mean you should)- i ended up with a leaky head gasket from doing that. my point is, that if my bike would have warped valves from the pipes i shoulda had them long ago, and i dont.
by the way, another benefit of the pipes/sucker/fuel management is that the engine runs at cooler temps (because it runs richer now). before, i used to run over 200 degrees all the time. now i can hit 200, but very rarely does it go over 200.

 

Thats just the thought from Racing, That's why you see some drag cars/bikes plug there exhaust after running. my bike had older Screamin' Eagle pipes on that were wide open (snappy and loud) but were all rusty on the case. got some newer ones and there just way too quiet untill you get the RPM's way up. Doesn't look like a whole lot of options for Sportys under 2004 I really like these
http://www.vanceandhines.com/store/s...lsystems/46035

 

A big welcome to you from sunny Southern California. Glad to have you on board.

 

Thank you