Hey Jerry, I put the gear (17 tooth) in the Trooper, but the speedometer got worse. With the original gear (16 tooth), 60 mph is was really 66 mph according to the gps. Now, with the new gear (17 tooth), 60 is really 71 mph (gps). Should I go with a 15 or 14 tooth gear? What do you recommend and what would that part # be?

Also, my trooper is smoking more at idle and as well as normal driving than it should. At times, it's like a mosquito sprayer... I had the injectors rebuilt and adjusted the valves. What else could it be and how do I fix it???

Many thanks, Dana