my XB9R is not well at all. it starts ok and intermittently runs ok, but more often than not, misfires, goes off a cylinder, wont rev up at all and generally runs like a bag of shite! will it be the ecu? any ideas?

Check your earth to the engine for corrosion (under the airbox there is a bonding strap across the stabiliser bar) and a TPS reset would be a good idea too.

ECMs generally work or they don't on individual circuits (or the are just dead).

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08 Specialized Langster

thanks for the tips pash. The TPS reset, is that something i've got to get done at a buell agents?

Dont forget to check the plug leads.
Chaffed leads on XB's are very common but this normally shows itself when riding in damp or rainy conditions, still worth checking

viewtopic.php?f=17&t=13
try this mate , a link to Pash's TPS reset it explains it nicely

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Feros Ferio

Yep, with Woz on that one, the front ignition lead likes to chaff on the the tickover screw...

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08 Specialized Langster