Can-Am Defender HD8 Dynojet Power Vision 3 ECU Tuner, 2018-2021 HD8 & MAX HD8, Higher Speed & Rev Limits

Your Defender HD8 has more muscle than the factory tune lets you use. Can-Am sets conservative speed and rev limits, and the HD8 hits them early, especially with a full bed or a MAX crew loaded up. The Dynojet Power Vision 3 opens those limits and adjusts engine timing for a small horsepower increase. It connects to the standard diagnostic port and is ready in minutes, with no technical expertise needed.

Performance Gains

• Raised speed and rev limiters so the HD8 keeps building speed on open two-track.
• Engine timing changes for a modest bump in horsepower and a quicker response off idle.
• Two-foot driving enabled, so you can use brake and throttle together while creeping over obstacles.
• Lower fan temperatures to keep the engine cooler when working slowly in the heat.
• Faster limp mode so a fault doesn't leave you crawling back at a walking pace.
• Back to stock anytime, since the factory calibration is saved on the device.

Built-In Diagnostics

After the flash, the Power Vision 3 keeps working. Its vivid full-color screen displays live RPM, coolant temperature, wheel speed and more, so you can check on your HD8 at any point in the ride. It also saves that data for later review on your computer. The included Power Core software lets you study the results and build custom tunes that fit your setup, whether that's a stock work machine or one wearing bigger tires and a winch.

Fitment

Covers 2018-2021 HD8 models, including DPS, XT, XT Cab and the MAX HD8 crew versions shown above. For the 2022+ HD9 that replaced the HD8, see our Defender HD9 tuner.

What's Included

• Dynojet Power Vision 3 with full-color display, preloaded with an HD8 tune
• Power Core tuning software

Returns

The tuner locks to the first ECU it flashes and can't be reset or moved to another machine, so ECU tuners are non-returnable. Double-check that your model and year appear in the chart, and send us a message if you need help.

Who Should Run It

HD8 owners who want a livelier Defender without opening up the engine. It's a smart add-on for MAX HD8 owners who regularly haul a full crew. Find more Defender performance parts and Defender electrical upgrades for lighting, gauges and power accessories.

Installation

Plug the tuner into the HD8's diagnostic port, choose your tune and press install. No tools are needed, and the flash finishes in a few minutes.