If you’ve ever thought about unlocking more power from your Yamaha WaveRunner, RIVA Racing just published one of the most straightforward guides yet. Earlier this month, they released a short instructional video that walks viewers through the process of reflashing an ECU on 2018 and newer Yamaha models using the Maptuner Nano HDMI tuning device and nothing more than a smartphone.
The process is shown start-to-finish in just a few minutes on a modern Yamaha performance model with its seat removed while the user follows along on the MyMaptuner app. After confirming both the craft’s and the phone’s batteries are fully charged, the demo shows how to access the ECU and connect the included programming cable. From there, the Maptuner Nano syncs to the mobile app via Bluetooth.
With only a handful of simple prompts — enter license code, add your vehicle, browse RIVA’s tuning library and download the appropriate performance file — the ECU is ready to accept the flash. Once the file loads and the device pulses purple to confirm programming, it’s as easy as syncing one last time and you’re ready to ride. Just as importantly, users can switch back to stock settings anytime they choose. There’s no limit to how many skis you can manage — simply purchase one tuning license per craft.
And here’s the perfectly-timed twist: the exact Maptuner Nano units featured in the video are currently discounted as part of RIVA’s End of Year Sale. Both versions — one for 1.8/1.9L engines and one for TR-1 models — are available now for $890.84 (regularly $989).
But tuning devices aren’t the only thing on sale. RIVA’s year-ending blowout includes up to 40% off sitewide across performance parts, accessories, and gear. Savings vary by category, including:
- Up to 20% off impellers, air intake, exhaust and engine components including superchargers and cooling parts
- 10% off RIVA Racing performance kits
- 15% off OEM parts
- Up to 40% off select hull components and electrical items
- 20% off steering and handling equipment
- Up to 20% off riding gear and 60% off JetPilot apparel
- 10% off maintenance essentials like oil, cleaners, sealants, batteries, tools and chargers
The sale runs through 11:59 p.m. EST on January 1, 2026, giving riders just a few days left to grab core upgrades for winter projects or early-season boosts. And, as always, shipping is free in the U.S. on orders of $150 or more.
International customers aren’t left out, either. RIVA notes that riders in the United Kingdom can order through their official UK distributor, Line1.
RIVA summed it up perfectly in a post earlier this week: they have everything you need to go faster. And with discounts covering nearly every corner of their catalog, now is one of the best times all year to build your setup for 2026.
