I sawed the back end of the airbox off, and without filter was making 65hp.

I've never had it jetted right and on a dyno since I replaced the filter, but it sounds good! I'd expect a good 60 with the thing setup propery.

Cue the flaming!
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball