TST WORX Stage 2 ECU Tune For Yamaha YZF-R3 / MT-03 2025+

Stage 2 Tune Features

• Developed specifically for the WORX Airbox Cover, WORX Velocity Stacks, TST WORX Smog Block Off Plate, and full-system Yoshimura exhaust
• Optimizes fuel maps for safe and reliable power gains
• Advanced ignition timing to improve top-end power
• Increases rev limiter by 600 RPM
• Decreased fan activation temperature
• Disables stock O2 sensor
• Optional deceleration fuel cut for less engine braking and more exhaust pops and bangs
• Increases power throughout the rev range
• 12% increase in peak power, and as much as 18% increase in power at top end before rev limiter compared to stock bike
• 6.5% increase in peak power, and as much as 11% increase in power at top end before rev limiter compared to Stage 1 configuration
• Torque increases throughout the rev range with 10-15% in the top-end
• Tuned on 93 pump gasoline
• Works with factory and aftermarket air filters

This ECU reflash was tuned using premium 93 octane pump gasoline. 93 octane should always be used when operating with this tune.

Description

With a shelf full of trophies and a national championship won on the R3 platform, we've firmly planted the TST WORX flag on the podium of R3 performance. We've taken everything we learned and applied it to the updated 2025+ model, enabling you to achieve race-winning power gains on your very own R3 or MT-03. This Stage 2 Tune was developed specially to work with our TST WORX Airbox Cover, TST WORX Velocity Stacks, a full-system aftermarket exhaust, and a the TST Smog Block Off Plate. This tune optimizes the bolt-on parts to ensure your R3 / MT-03 is taking full advantage of the additional airflow and power potential. When combined with the correct parts, you'll see massive gains through the entire rev range, with the largest being at the top-end, helping accelerate faster out of corners and separate yourself from the pack on the straightaways.

EQUIPMENT REQUIREMENT: Please be aware that this tune was developed to be paired with everything in the WORX Pack and a full system aftermarket exhaust. Failure to do so will result in poor performance that may fall out of safe zone of operation.

AFTER TUNE: Please note that a temporary check engine light will appear after flashing due to being powered out of the motorcycle. Don't stress, the check engine light will clear itself after two ride cycles and does not affect the performance or functionality of your motorcycle.

NORTH AMERICAN MARKET ONLY: Please keep in mind that this is only available for North American market Yamaha YZF-R3 / MT-03 motorcycles ONLY. All orders placed outside of the North American region will be canceled.

Ordering information

Supplied to order. Availability and dispatch timing will be confirmed after purchase.