Ok... I have been out of the loop for a bit but I'm back now for an undetermined amount of time.

I've had my '95 ZX9R for a short time now. I sent it to the shop to check the sync on the carbs, a rejetting, k&n filter, a full service and new tires.

The shop has a dyno and they ran it when they were done. The result was 112 HP at the wheel. That doesn't really seem correct. The bike is supposed to leave the showroom floor with 138 BHP. Could I really be loosing more then 26 HP at the rear wheel? The graph was super straight and it runs extremely well, it also has tons more power then previously. The tech said all but one of the valves was way off. I went with a 170/60 Michelin Pilot Power rear tire instead of the 180/55 stock tire. I should have lost a pound or two there, that could only help. The chain and sprocket are original but in like new condition. The bike only has 13,000 miles on it. It has barely been used.

Anyway, ideas or opinions are welcome.