had my xb12r on the dyno just to see what it was doing



got 80lb tourqe
and 90 bhp
at the back wheel

power curve looked good

is this good for a xb12r ?

Depends on the dyno. There is a very famous dyno that will give you 100hp.

My XB12R with a Ti Force and K&N gave low 80s, but with some attention to the maps I got just over 90hp. This was on Tubbs' Dynojet dyno, which has seen a lot of Buells so is easy to see whether your bike is good or bad.

Air cooled Buells are not about power though, if you wanted power you would have bought an R1. Buells (to me) are about rolling on the throttle and enjoying the part throttle performance.

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08 Specialized Langster

i have a k&n filter and a micron serpant system and loaded a map for exhaust and filter
and was wondering wether i had good figures for a buell ? as it was first time on dyno

I would have said that those figures seem about right for the mods you have made.The real key is how does the bike feel on the road. Pash's Firebolt gives the same sort of numbers but they don't tell the full story as the fuelling on his bike makes it so smooth and the power just feels linear. Best bike engine I have ever had the pleasure to ride. Its almost un-Buell like in its smoothness and feel.

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Buell S1
Buell S3 (Topless for now)
Buell XB12S
Piaggio X8 400ie
Yamaha XTZ750 Super Tenere (x2)
Suzuki GSXR750WR
BSA B441VS
FJR1300

Need to compare it to another Buell on the same dyno.

On the face of it, the engine looks like it is running rich at the top end, but you can't really tell cos you are reading an average of two cylinders, one could be running very rich, the other a little lean. Despite not knowing what the solution is, there is room for improvement...

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08 Specialized Langster