There are many good reasons to test or tune a motorcycle on a computerized chassis dynamometer. First and foremost is the fact that dyno testing is the only way of determining if factors effecting overall performance such as cam selection, ignition timing, fuel/air ratio, exhaust selection, etc. are optimal. Performance is not just the amount of power or torque that a engine produces but also encompasses start-ability, throttle response, fuel economy as well as the mechanical condition of the engine/drivetrain.

We normally see an average of 8-25% increase in horsepower and torque by optimizing the fuel/air ratio (jetting on carburetors or fuel curve remapping on fuel injection), tuning exhaust and setting ignition advance parameters. This is true even if the customer reports that the motorcycle is already running good. The reason for this is the fact that it generally requires a 10% change in performance to give the rider a real “seat of the pants” feel on performance gains or losses.

With the sensitivity of the modern dyno, the experienced dyno operator can see changes as fine as a few tenths of a horse or lb-ft. of torque after several controlled runs. This allows them to make small adjustments that can result in a percentage point or two of gain, but in combination with all the aspects of engine tuning, add up to significant increases in overall performance. This cannot be accomplished any other way.

Dyno testing is also invaluable for providing a motorcycle owner with a performance “baseline” that can be used for comparison to determine the ongoing condition of the bike or if performance enhancing modifications are to be installed.

Performance part selection, such as what combination of cam, head mods, induction, ignition and particularly exhaust systems work well together can be best determined by using a dynamometer.

When properly performed, dynamometer testing does not in any way harm the motorcycle engine, drivetrain, or tire, but can and does hurt the ego or pocket book of many motorcycle owners who have had various performance modifications installed that where not selected or tuned with the aid of a computerized dynamometer.