TST Industries, LLC

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

Sale price$285.00
SKU: TUNE-1500
TST WORX Performance ECU Tune For Yamaha YZF-R3 / MT-03 2025+
TST WORX Performance ECU Tune For Yamaha YZF-R3 / MT-03 2025+
Unlock more performance on your 2025+ Yamaha YZF-R3 / MT-03 with TST Industries WORX.

Take your 2025+ Yamaha YZF-R3 / MT-03 to the next level with the TST WORX Performance ECU Tune. This custom flash unlocks your factory ECU to deliver increased power and refined performance throughout the rev range, making every ride feel faster, stronger, and more responsive.


Applications:

  • Yamaha YZF-R3 | 2025, 2026 (North American models ONLY)
  • Yamaha MT-03 | 2025, 2026 (North American models ONLY)

You are responsible for sending us an undamaged stock Yamaha YZF-R3 / MT-03 ECU. We will reflash the ECU and send it back to you ready to be reinstalled. Once an ECU is flashed, all sales are final and no refunds will be issued.

TST ECU Tunes are shipped after we receive and flash your ECU. Any other items in the same order will ship separately on our normal schedule.

TST Industries, LLC

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

Sale price$285.00
SKU: TUNE-1500

Take your 2025+ Yamaha YZF-R3 / MT-03 to the next level with the TST WORX Performance ECU Tune. This custom flash unlocks your factory ECU to deliver increased power and refined performance throughout the rev range, making every ride feel faster, stronger, and more responsive.


Applications:

  • Yamaha YZF-R3 | 2025, 2026 (North American models ONLY)
  • Yamaha MT-03 | 2025, 2026 (North American models ONLY)

You are responsible for sending us an undamaged stock Yamaha YZF-R3 / MT-03 ECU. We will reflash the ECU and send it back to you ready to be reinstalled. Once an ECU is flashed, all sales are final and no refunds will be issued.

TST ECU Tunes are shipped after we receive and flash your ECU. Any other items in the same order will ship separately on our normal schedule.

Quantity:

This product is part of our WORX program. Learn more.

This product was designed and intended for closed-course competition use ONLY. This product is neither designed nor intended for use on public roads or land and it is against Federal and State regulations to do so.

Tune Features

  • Optimizes fuel maps for safe and reliable power gains
  • Advanced ignition timing to improve top-end power
  • Increases rev limiter by 300 RPM
  • Lowers 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
  • 5% increase in peak power, and as much as 8% increase in power at top end before rev limiter
  • Torque increases throughout the rev range with 5-8% in the top-end

Specifications

  • Equipment requirement must be followed
  • Works with factory and aftermarket air filters
  • Should be used with 91/93 pump gasoline
  • AIS should be blocked for optimal results
  • O2 sensor removal is not required
  • Only compatible with North American spec ECUs

Description

We love the Yamaha YZF-R3 / MT-03 platform, but we found that the 321cc engine has more to give than what the stock ECU will allow. That's why we unleashed our championship-winning WORX Racing Division on our very own 2025 Yamaha YZF-R3 and MT-03. After hours on the dyno and countless laps around the track, we've put together a quick and easy way for riders to make the most of their aftermarket full-system exhaust upgrade. By capitalizing on the improved airflow provided by the full-system exhaust, this tune upgrades a wide variety of parameters to provide increased horsepower and torque across the entire rev range. With a 5% increase in peak power and 5-8% increase in torque in the top end, this tune provides real-world power gains that can help you seperate yourself from the pack. This tune also optimizes the Yamaha by adjusting or disabling a wide range of parameters that aid in overall performance and operational improvements. Give your Yamaha more power and feel the difference with every twist of the throttle!

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.

ECU Flashing Explained

Q: Do I ship my ECU to you?

A: Yes, it is your responsibility to ship an undamaged stock ECU to our facility in Florida for tuning. The ECU must be properly packed and free of any damage or contaminants to be tuned properly.

Q: Where do I ship my ECU?

A: Once your order is placed, our Customer Support team will send you an email with instructions on how to properly package and ship your ECU to our headquarters in Central Florida.

Q: Do I pay for shipping if I am sending you my ECU?

A: Yes - it is your responsibility to properly package your ECU and send it to our facility in Florida.

Q: What is the turnaround time after you receive my ECU?

A: Our tuning turnaround time is only 1-3 business day.

Q: Should I remove my 02 sensor?

A: O2 sensor removal is not required

Q: Do I need to block the AIS / Install smog block off plates?

A: Yes, you should block the AIS for optimal performance while runing this tune.

Q: Should I remove my charcoal canister if my bike is equipped with one?

A: That's up to you. The charcoal canister won't effect the performance of your ECU tune, so there's no need to remove it. If you do decide to remove it, be sure to check with local laws and regulations.

Q: Will I need to send my ECU in again for a new tune if I install a different exhaust?

A: If your new exhaust is listed as a upported option, we highly recommend sending your ECU back in for a retune. If not, it is not needed.

Q: Why is this tuned for full system exhausts?

A: We wanted to achieve the best performance gains possible with by optimizing the most common performance upgrade done to the Yamaha R3 motor while retaining the reliability it's known for.

Q: My exhaust isn't listed, can I still get this tune?

A: Yes, we can install a compatible tune even if your exhaust is not listed. You will see benefits compared to the stock tune; however, the tune installed may not be optimal for your setup.

Q: What is your return and warranty policy?

A: Returns are not accepted for this item. Please read over our policies thoroughly on our terms and conditions page BEFORE making your purchase. TST Industries Terms and Conditions

Tune Features

  • Optimizes fuel maps for safe and reliable power gains
  • Advanced ignition timing to improve top-end power
  • Increases rev limiter by 300 RPM
  • Lowers 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
  • 5% increase in peak power, and as much as 8% increase in power at top end before rev limiter
  • Torque increases throughout the rev range with 5-8% in the top-end

Specifications

  • Equipment requirement must be followed
  • Works with factory and aftermarket air filters
  • Should be used with 91/93 pump gasoline
  • AIS should be blocked for optimal results
  • O2 sensor removal is not required
  • Only compatible with North American spec ECUs

Description

We love the Yamaha YZF-R3 / MT-03 platform, but we found that the 321cc engine has more to give than what the stock ECU will allow. That's why we unleashed our championship-winning WORX Racing Division on our very own 2025 Yamaha YZF-R3 and MT-03. After hours on the dyno and countless laps around the track, we've put together a quick and easy way for riders to make the most of their aftermarket full-system exhaust upgrade. By capitalizing on the improved airflow provided by the full-system exhaust, this tune upgrades a wide variety of parameters to provide increased horsepower and torque across the entire rev range. With a 5% increase in peak power and 5-8% increase in torque in the top end, this tune provides real-world power gains that can help you seperate yourself from the pack. This tune also optimizes the Yamaha by adjusting or disabling a wide range of parameters that aid in overall performance and operational improvements. Give your Yamaha more power and feel the difference with every twist of the throttle!

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.

ECU Flashing Explained

Q: Do I ship my ECU to you?

A: Yes, it is your responsibility to ship an undamaged stock ECU to our facility in Florida for tuning. The ECU must be properly packed and free of any damage or contaminants to be tuned properly.

Q: Where do I ship my ECU?

A: Once your order is placed, our Customer Support team will send you an email with instructions on how to properly package and ship your ECU to our headquarters in Central Florida.

Q: Do I pay for shipping if I am sending you my ECU?

A: Yes - it is your responsibility to properly package your ECU and send it to our facility in Florida.

Q: What is the turnaround time after you receive my ECU?

A: Our tuning turnaround time is only 1-3 business day.

Q: Should I remove my 02 sensor?

A: O2 sensor removal is not required

Q: Do I need to block the AIS / Install smog block off plates?

A: Yes, you should block the AIS for optimal performance while runing this tune.

Q: Should I remove my charcoal canister if my bike is equipped with one?

A: That's up to you. The charcoal canister won't effect the performance of your ECU tune, so there's no need to remove it. If you do decide to remove it, be sure to check with local laws and regulations.

Q: Will I need to send my ECU in again for a new tune if I install a different exhaust?

A: If your new exhaust is listed as a upported option, we highly recommend sending your ECU back in for a retune. If not, it is not needed.

Q: Why is this tuned for full system exhausts?

A: We wanted to achieve the best performance gains possible with by optimizing the most common performance upgrade done to the Yamaha R3 motor while retaining the reliability it's known for.

Q: My exhaust isn't listed, can I still get this tune?

A: Yes, we can install a compatible tune even if your exhaust is not listed. You will see benefits compared to the stock tune; however, the tune installed may not be optimal for your setup.

Q: What is your return and warranty policy?

A: Returns are not accepted for this item. Please read over our policies thoroughly on our terms and conditions page BEFORE making your purchase. TST Industries Terms and Conditions

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