PTO dynamometer capable of horsepower up to 150 with 540 and 240 horsepower with small 1000 PTO. This is the most accurate way to tune carburetors and ignition systems. We can also simulate heavy load to diagnose low power and runnabilty concerns. Dyno tuning has been proven to pay off in light and antique tractor pulling. In addition to diagnosis and tuning, we can tell you exactly how much power your tractor is producing. Call Power Pac at 1-800-232-0293 for more information today!