Trifecta specializes in delivering custom powertrain control module (PCM) programming to the high performance community. Trifecta Performance offers both local "dyno" tuning services in the Seattle, WA area, as well as mail order custom PCM programming services.

Note: We can assist you with tunes for 95 and up General motors vehicles. See our Supported Vehicles list for all vehicles we can tune.

CHW has started a loaner program. We have a Netbook/Cable or a Cable we loan depending if you chose this option and you have a laptop or do not have a laptop.

The CHW Tune Center Loaner cable allows car enthusiasts to perform their own PCM programming, quickly safely and not requiring a PCM replacement.

Have Questions? stop by the Tune Center Forum and enter them in, our staff will promptly return an aswer for you.

Note: Installing of this tune may or may not void your vehicle's warranty. ChevyHHRWorld will not be held responsible for any cost or damages to any vehicle, person or item. This tune will be installed at your own risk.