Originally Posted by
FJRider
To confirm any gains ... put it on the dyno before and after ... doing that may confirm if the the HP claims of the manufacturer were correct or not. Often they are not.
There is a YouTube clip where the official Trump accessory full system(Vance and Hines?) is fitted to a 900cc Triumph twin for a gain of one solitary BHP on a recently calibrated dyno. That one BHP cost about $3,000.
BIKE magazine tested after market cans some years back, some produced less horses than the stock cans.
There is a grey blur, and a green blur. I try to stay on the grey one. - Joey Dunlop
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