Reliable Tuning’s Sea-Doo 300 HP model performance tune is one of the best out there without sacrificing reliability. This performance flash is the best bang for the buck without requiring hundreds of dollars of performance parts. Thought your 300 was fast before? Try this!
 
With this tune, you will experience the following:
 
Increased acceleration
Increased throttle response & less throttle lag
Moderate changes to touring mode
Drastic changes to sport mode
Higher RPM limit
 
PRICING VARIABLES:
GTX 260 | REC MODERATE @8400 RPM (+$10)
GTX 300 | REC MODERATE @8400 RPM (+$20)
GTX 300 | WARRANTY WARRIOR - UNDETECTABLE
 
No additional license fee is required if you decide to upgrade the same machine with an intake, supercharger mods, etc.

Most STOCK 300 models will experience 77-82 MPH, depending on environmental factors and machine variances.
 
Air intakes are recommended, but not required.
 
 
Why do I need to rent this?
This rental kit is required to flash your machine. With every tune sold, we remotely connect and flash your Sea-Doo for you, on your own time!

How long can I keep this?
Once your rental kit arrives, the machine(s) must be flashed and the kit dropped off with the carrier within 48 hours. This ensures that we can accommodate other customers in a timely fashion. Exceptions can be made with prior arrangements.
 
These tunes are exclusively sourced by Reliable Tuning, the most recommended tunes across Seadoo Riders community. This tune will provide a boost of performance without requiring extra parts or mechanical knowledge.
 
This tune will not compromise reliability and once installed you will experience the following:
 
Please note that performance increases are dependent on weather, onboard weight, water conditions and fuel type.
 
Fuel Recommendation: Runs on 87 or 89 octane (if ever you're on the water and need fuel you can do your thing...) but We recommend 91+ octane to maximize performance.
 
Self-Install Kit Rental Information: The CanTune DIY kit contains all the software and hardware required to flash your SeaDoo! We ship to you and provide return pre-paid postage. An internet connection is required to flash the ECU (via wireless or phone hotspot). The DIY kit is supplied with the hardware interface and a ready to go tablet. Follow quick and easy steps to tune your watercraft in minutes.
 
Deposit Information: A security deposit of $425 is required for the DIY kit rental. The full security deposit will be refunded immediately once the DIY kit is returned and received in good working order (no damage, missing components) to CanTune. The self-install kit must be mailed for return within 48 hours of receipt - but we're flexible if arrangements are made.
 
CanTune On-Site Installation: We flash the tune and do the work for you! We can schedule for you to drop by our shop to install the tune at no additional charge.