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Gerolomy Throttle Body
I just replaced my Horsepower Inc 54mm throttle body with the Gerolomy Dual Runner 50MM.
I have spent thousands on this bike for only hundreds in improvment,
but I finally found a modification that paid off big time for me.
Mark at B.C. Gerolomy in Rancho Cordova, CA. has a throttle body he designed that before tuning showed a 7hp gain, and after tuning, showed an 11hp gain. These results were on the same dyno, with the same tech. The gains were great, but what really got me excited was the fact that all the drivability issues I had learned to live with are gone. As an added benefit, my Jim's 120 now gets better milage than my stock motor used to.
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Linear Mode
