Had a larger front pulley put in, 33 tooth instead of 32. Wanted a little less rev at freeway speeds and a little better gas mileage. Now my speedometer reads exactly like my GPS. Hard to tell if it dropped my RPMs much because the speedo is hooked to the tranny and it doesn't know the pulley is larger.

 

I have a 30T/68T planned. the change from 32T/66T seems to move the RPMS a few hundred. I can understand speedo issues....but some folks report crusie issues as well as 6th gear light issues...scratching my head on that. Must be a magnet on the forward pulley and a sensor near it somewhere.