The GTX Limited 350 is Sea-Doo's touring flagship. People buy it to cover real distance in comfort, with a passenger, music and every convenience on board. Still, GTX owners ask about the factory GPS limiter all the time. Here is why touring riders notice it too, what stays untouched when you remove it, and why a premium ski should not get a permanent module wired in.
What sets the GTX Limited 350 apart
For model year 2027 the GTX Limited gets the Rotax 1630 ACE 350: 1,630 cc, supercharged, external intercooler, 350 hp. It replaces the 325. Engine Auto-Start is new on the feature list, and Mineral Blue is a new color.
The hull is the ST3 at 345 cm long, 125 cm wide and 114 cm high. Dry weight is 385 kg (about 849 lb), payload is 273 kg (about 602 lb), the tank holds 70 liters (18.5 gal), and there is room for three. The equipment is all about comfort:
- Limited Package: two pop-up cleats, a seat storage organizer, knee pads, a cover, USB and an exclusive color
- iDF: Intelligent Debris-Free, which clears the pump at the push of a button
- BRP Premium Audio with 2 x 50 watts
- 10.25 inch touchscreen with depth finder
- Hydraulic steering damper and direct access to the front storage
One note: iDF is still on the 2027 GTX Limited. The official spec sheet lists it, even though some write-ups say otherwise.
Why touring riders still notice the limiter
A touring rider rarely lives at the cap. But a touring rider covers distance. Crossing a big lake, running between bays or cruising along the coast means long stretches at a steady, brisk pace. That is exactly where the factory limit draws a hard line, set by the ECU based on the GPS signal.
Over a full day on the water that adds up. Ride for hours and you spend a lot of miles sitting right at that line, feeling every time that the ski has more to give.
This is not about racing around. It is about a 350 hp ski that is not allowed to run the way it could from the factory, even with flat water and a clear path ahead.
What stays untouched
The M-JET Speed Limit Remover only removes the factory Vmax/GPS speed limit. It is not a tune and does not change engine output. Everything you bought the GTX Limited for stays the way it is:
- iDF still clears the pump at the push of a button.
- Audio, touchscreen and depth finder work as usual.
- iTC throttle and iBR with brake, neutral and reverse stay stock.
- The Limited Package is left alone. Nothing gets drilled and no wires get routed.
No ECU unlock is needed. The ECU stays in the ski and never has to be shipped anywhere.
No permanent wiring in a premium ski
A SCOM keeps manipulating the speed signal, so it has to stay hard-wired. On a luxury ski that means a foreign part and extra wiring in the hull that you have to keep an eye on every time you service it. We broke down the day-to-day downsides in Downsides of a permanently installed SCOM.
The Speed Limit Remover only goes onto the diagnostic connector for a moment. You switch the limit off in the M-JET SLI app and unplug the device. The first time, it pairs with your GTX's VIN. After that you can remove and restore the limit on that ski as often as you like, for example before you sell it.
More power is a separate step
If you want more pull from the GTX Limited, say for fully loaded trips, that takes software tuning with the M-JET FLASHER. On the 350 it requires a one-time unlock of the Bosch MG1CA920 ECU. Ship the ECU to our location in Florida or in Germany, or get a replacement ECU that comes already unlocked. With the replacement, nothing gets shipped in, and the flasher transfers the data from the old unit to the new one.
The app shows which setups are available for the GTX Limited 350, and you can go back to stock at any time. For how this looked on the previous model, read GTX Limited 325 tuning. Every option is laid out on our Sea-Doo SCOM alternative page.
FAQ
Does iDF still work after the limiter is removed?
Yes. The Speed Limit Remover only removes the speed limit. iDF, audio, display and every other feature stay exactly as they were.
Does anything stay installed on the ski?
No. The device only sits on the diagnostic connector while you switch the limit. Then you unplug it, and no module or wire stays behind.
Does this apply to the RXT-X 350 too?
Yes, same hull, same engine. What matters on the sportier sibling is covered in RXT-X 350: the limiter on long runs.
