Kawasaki Ultra 310 ECU Tune - 310X, 310R & 310LX Mail-In Reflash

CMS ECU tuning for Kawasaki Ultra 310 - Cabrera Motorsports

Kawasaki Ultra 310 ECU Tuning by Cabrera Motorsports

The Kawasaki Ultra 310 runs the most powerful production PWC engine Kawasaki has built, a supercharged 1,498cc four-cylinder, and the factory calibration still holds it back with speed limiters, throttle delays, and conservative fueling. A CMS custom tune removes those limits with no engine work required. We tune the Ultra 310X, 310R, 310LX, and 310LX-S.

Configure Your Ultra 310 Tune →

➕ What a CMS Ultra 310 Tune Does

  • Factory speed limiter removed. Ride to the Ultra's true top speed instead of the factory cap.
  • Sharper throttle response. Factory throttle delays and torque limiters are eliminated for instant response off the line.
  • Optimized fueling and RPM limits. Calibrated for 93 octane pump gas on the stock supercharged engine.

We ride and race these exact setups on our own builds. We race what we sell!

🏄 Which Ultras We Tune

All Ultra 310 models with the supercharged engine: 310X, 310R, 310LX, and 310LX-S. The tune is for stock engines. If your Ultra has internal engine modifications, call us before ordering so we can talk through the right calibration.

Have an older naturally aspirated Ultra or an STX-15F? Those share the 1500 NA engine with the SX-R. See our Kawasaki 1500 tuning page.

⛽ Fuel Requirement

All Ultra 310 tunes are calibrated for 93 octane pump gas. No race fuel required. Fill up at the pump and ride.

⚙️ How It Works: Mail-In ECU Flash

Kawasaki tuning is mail-in only. There is no wireless flash for this ECU.

  1. Order your tune through the configurator.
  2. Ship us your ECU. We flash your custom calibration on the bench.
  3. We ship it back fast from Florida. Plug it in and ride.

🏁 Get Your Ultra 310 Tune

Configure Your Ultra 310 Tune →

Parts for the rest of the ski are in our Kawasaki Ultra collection.

❓ FAQs

Can I use the RTD on my Ultra?
No. The Kawasaki ECU is mail-in only. Ship it to us and we flash it on the bench.

Do you tune modified Ultra engines?
The Ultra 310 tune is for stock engines. If yours is modified, call us first.

How much faster will my Ultra be?
Real-world results depend on your ski's condition, load, and water conditions, so we don't promise a specific number. We calibrate each tune to get the most out of your ski safely on 93 octane.

Can I go back to stock?
Yes. Your stock calibration is backed up and you can request a return to stock.

Is my warranty affected?
ECU modifications can affect factory warranty coverage. Most of our customers are past warranty or accept the trade for the performance.

Questions about your Ultra? Call (786) 465-5150 and you'll talk to people who ride and race these skis.