TST Industries, LLC

TST WORX Performance ECU Tune for Kawasaki Z900 2025+

Sale price$285.00
SKU: TUNE-2500
TST WORX Performance ECU Tune for Kawasaki Z900 2025+
TST WORX Performance ECU Tune for Kawasaki Z900 2025+
TST WORX Performance ECU Tune for Kawasaki Z900 2025+
TST WORX Performance ECU Tune for Kawasaki Z900 2025+

Unleash the hidden performance of your 2025+ Kawasaki Z900 with a TST WORX ECU Tune. Developed and tested on our in-house dyno, our custom ECU flash delivers over 34% more top-end power, an 8% boost in the midrange, and a 4% increase in peak horsepower compared to a stock tune with an aftermarket exhaust. Upgrade today and feel the difference!


Applications:

  • Kawasaki Z900 / SE | 2025, 2026 (North American models ONLY)

You are responsible for sending us an undamaged stock Kawasaki Z900 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 Kawasaki Z900 2025+

Sale price$285.00
SKU: TUNE-2500

Unleash the hidden performance of your 2025+ Kawasaki Z900 with a TST WORX ECU Tune. Developed and tested on our in-house dyno, our custom ECU flash delivers over 34% more top-end power, an 8% boost in the midrange, and a 4% increase in peak horsepower compared to a stock tune with an aftermarket exhaust. Upgrade today and feel the difference!


Applications:

  • Kawasaki Z900 / SE | 2025, 2026 (North American models ONLY)

You are responsible for sending us an undamaged stock Kawasaki Z900 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.

Features

  • Optimized engine performance for aftermarket full-system exhaust
  • Provides over 34% increase in power at the top
  • Provides over 8% increase in power in the mid-range
  • Provides 4% increase to peak power compared to the stock tune and aftermarket exhaust
  • Provides significant mid-range and top-end torque increases
  • Optimized fueling and ignition timing
  • ETV table is modified and unrestricted in Full Power mode
  • Increased rev limiter by 400 RPM
  • Lowered fan activation temperature
  • Disabled O2 sensor fault
  • Disabled decel fuel cut
  • Disabled AIS/PAIR valve fault
  • Disabled top speed limiter
  • Smooth power delivery

Specifications

  • Must be paired with an aftermarket exhaust
  • Works with stock and aftermarket air filters 
  • Should be used with 91/93 pump gasoline
  • AIS should be blocked for optimal results and to avoid excessive popping on deceleration
  • O2 sensor connector should be unplugged for optimal results
  • Only compatible with North American spec ECUs

Description

The 2025+ Kawasaki Z900 delivers an incredible riding experience straight from the factory, but there's plenty of untapped performance hiding beneath the surface. That's where our TST WORX engineers step in. Using our in-house dyno, we've developed a custom ECU bench flash that optimizes engine performance and delivers substantial power gains throughout the RPM range. How substantial? We're talking over a 34% increase in top-end power, more than 8% additional power in the midrange, and a 4% boost in peak horsepower compared to a Z900 equipped with an aftermarket exhaust and stock ECU tune. The result is a more responsive, powerful machine that delivers the performance you want, whether you're carving through corners or opening up the throttle on the straights. Unleash the true potential of your Kawasaki Z900 with a TST WORX Performance ECU Tune and experience the difference for yourself!

AFTER TUNE: Please be aware that the Check Engine Light will be on and the Riding Mode and KTRC will flash after reinstalling the ECU. All of these will clear after one or two rides of at least 35-45 MPH.

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: Yes, unplug your O2 sensor connector for optimal performance while runing this tune.

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 Kawasaki 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

Features

  • Optimized engine performance for aftermarket full-system exhaust
  • Provides over 34% increase in power at the top
  • Provides over 8% increase in power in the mid-range
  • Provides 4% increase to peak power compared to the stock tune and aftermarket exhaust
  • Provides significant mid-range and top-end torque increases
  • Optimized fueling and ignition timing
  • ETV table is modified and unrestricted in Full Power mode
  • Increased rev limiter by 400 RPM
  • Lowered fan activation temperature
  • Disabled O2 sensor fault
  • Disabled decel fuel cut
  • Disabled AIS/PAIR valve fault
  • Disabled top speed limiter
  • Smooth power delivery

Specifications

  • Must be paired with an aftermarket exhaust
  • Works with stock and aftermarket air filters 
  • Should be used with 91/93 pump gasoline
  • AIS should be blocked for optimal results and to avoid excessive popping on deceleration
  • O2 sensor connector should be unplugged for optimal results
  • Only compatible with North American spec ECUs

Description

The 2025+ Kawasaki Z900 delivers an incredible riding experience straight from the factory, but there's plenty of untapped performance hiding beneath the surface. That's where our TST WORX engineers step in. Using our in-house dyno, we've developed a custom ECU bench flash that optimizes engine performance and delivers substantial power gains throughout the RPM range. How substantial? We're talking over a 34% increase in top-end power, more than 8% additional power in the midrange, and a 4% boost in peak horsepower compared to a Z900 equipped with an aftermarket exhaust and stock ECU tune. The result is a more responsive, powerful machine that delivers the performance you want, whether you're carving through corners or opening up the throttle on the straights. Unleash the true potential of your Kawasaki Z900 with a TST WORX Performance ECU Tune and experience the difference for yourself!

AFTER TUNE: Please be aware that the Check Engine Light will be on and the Riding Mode and KTRC will flash after reinstalling the ECU. All of these will clear after one or two rides of at least 35-45 MPH.

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: Yes, unplug your O2 sensor connector for optimal performance while runing this tune.

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 Kawasaki 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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