This page contains links to various support resources, including the Frequently Asked Questions (FAQ) and product manuals. Many common problems can be resolved by looking at these.

If you are planning a new installation, consider trying the gear ratio and tire size calculator. This will show you a chart of the engine speed and MPH for a given transmission, tire size, and final drive ratio combination.

If you purchased COMPUSHIFT or other HGM products from a dealer or distributor, please contact them first for support.

If you purchased directly from HGM, or your dealer / distributor has been unable to resolve your problem, please contact HGM directly using the information listed on our Contact page.