In recent weeks, performance Sea-Doo enthusiasts have experienced a few highs and lows when it comes to tuning the new 325-horsepower RXP-X and RXT-X. While freeing the ECU of its speed control is possible it’s expensive and time-consuming. Equally, wholly unlocking the 325’s potential is only possible by replacing the ECU altogether, and installing several thousands of dollars’ worth of additional hardware.
Then comes Kspeed with an incredibly simple plug-and-play handheld tuner that frees up the supercharged 310-horsepower Ultras within 10-to-15 minutes. The Watercraft Journal first hinted of the tuner at the beginning of October, and fully revealed the Kspeed Tune Box a little over two weeks ago. Since then, inquiries into the Tune Box have been huge and performance Kawasaki enthusiasts are champing at the bit to get one.
And because Kspeed is always trying to answer questions before you ask them, they went ahead and documented a real time reflash of an Ultra using the Kspeed Tune Box in a video attached below. This should held take a little of the fear out of some folks who want to reflash their ECU but are scared of screwing something up in the process. The video is absurdly simple to follow and should equip the most hapless with the steps to tune their JetSki.
