TST Industries, LLC

TST WORX Performance ECU Tune for Suzuki DR-Z4S / DR-Z4SM 2025+

Sale price$285.00
SKU: TUNE-3200
TST WORX Performance ECU Tune for Suzuki DR-Z4S / DR-Z4SM 2025+
Get your Suzuki DR-Z4S / DR-Z4SM ECU tuned by TST Industries and experience the difference.
Ensure this tune is paired with the proper performance parts for safe and reliable engine performance.
Unlock massive power gains with the TST Industries WORX Performance ECU Tune.

Adding an aftermarket full system exhaust to your Suzuki DR-Z4SM / DR-Z4S is a huge upgrade in both performance and sound, but dialing in the fueling is critical to keep your bike running smoothly while also adding another huge performance boost that the exhaust alone couldn't deliver. That's why we strapped our DR-Z4SM equipped with the Yoshimura RS-12 Full System Exhaust to our in-house dyno and got to work, and the results speak for themselves!


It is extremely important that you correctly select your model when checking out as it may cause errors with the Tune if the model is not correct.

Applications:

Suzuki DRZ400S / DRZ400SM | 2025, 2026 (North American models ONLY)

You are responsible for sending us an undamaged stock Suzuki DR-Z4S / DR-Z4SM 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 can 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 Suzuki DR-Z4S / DR-Z4SM 2025+

Sale price$285.00
SKU: TUNE-3200
Select Model:DR-Z4S

Adding an aftermarket full system exhaust to your Suzuki DR-Z4SM / DR-Z4S is a huge upgrade in both performance and sound, but dialing in the fueling is critical to keep your bike running smoothly while also adding another huge performance boost that the exhaust alone couldn't deliver. That's why we strapped our DR-Z4SM equipped with the Yoshimura RS-12 Full System Exhaust to our in-house dyno and got to work, and the results speak for themselves!


It is extremely important that you correctly select your model when checking out as it may cause errors with the Tune if the model is not correct.

Applications:

Suzuki DRZ400S / DRZ400SM | 2025, 2026 (North American models ONLY)

You are responsible for sending us an undamaged stock Suzuki DR-Z4S / DR-Z4SM 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 can 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

  • Developed for bikes with an aftermarket full system exhaust
  • Optimizes fueling maps
  • Advances ignition timing to improve power at the top end
  • ETV is unrestricted at top end in Mode 1
  • Disables decel fuel cut
  • Disables front wheel speed fault code
  • Disables EVAP fault codes
  • Disables PAIR FI code
  • Disables O2 Sensor FI code
  • Over 16% increase in power and torque in the top end compared to stock
  • 9% increase in peak power and torque compared to stock
  • Over 11% increase in power and torque compared to a full system exhaust and stock tune
  • 4% increase in peak power and torque when compared to just a full system exhaust and stock tune

Specifications

  • Must be paired with an aftermarket exhaust
    • Developed using Yoshimura RS-12 Full System Exhaust with the baffle installed
    • Only intended for use with Yoshimura RS-12 or similar flowing exhaust systems
  • Works with stock and aftermarket air filters
  • Should be used with 91/93 pump gasoline
  • O2 sensor should be removed for optimal results
  • Only compatible with North American spec ECUs

Description

After the long awaited Suzuki DR-Z4 update, we knew that our WORX Program could make it even better, and it certainly did! After some time on our in-house dyno, we developed an ECU tune that not only optimizes your Suzuki for your aftermarket full system exhaust, but it also unleashes additional performance across the entire rev range, especially above 7500 RPM. Compared to the stock setup, you can expect as much as 9% increase in peak power, and over 16% increase in the top end before the rev limiter. That's an additional 4% in peak power and over 11% increase in the top end when compared to the exhaust alone. Don't leave easy power gains on the table, get your ECU flashed and experience the difference that the TST WORX Performance ECU Tune unlocks.

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, remove your O2 sensor 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: Is a full system exhaust required for the tune to work?

A: Yes - This tune was developed with the Yoshimura RS-12 full system exhaust and it must be paired with the RS-12, or similar, full system exhaust to achieve expected results. Failure to do so can compromise engine reliability and performance. r.

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

  • Developed for bikes with an aftermarket full system exhaust
  • Optimizes fueling maps
  • Advances ignition timing to improve power at the top end
  • ETV is unrestricted at top end in Mode 1
  • Disables decel fuel cut
  • Disables front wheel speed fault code
  • Disables EVAP fault codes
  • Disables PAIR FI code
  • Disables O2 Sensor FI code
  • Over 16% increase in power and torque in the top end compared to stock
  • 9% increase in peak power and torque compared to stock
  • Over 11% increase in power and torque compared to a full system exhaust and stock tune
  • 4% increase in peak power and torque when compared to just a full system exhaust and stock tune

Specifications

  • Must be paired with an aftermarket exhaust
    • Developed using Yoshimura RS-12 Full System Exhaust with the baffle installed
    • Only intended for use with Yoshimura RS-12 or similar flowing exhaust systems
  • Works with stock and aftermarket air filters
  • Should be used with 91/93 pump gasoline
  • O2 sensor should be removed for optimal results
  • Only compatible with North American spec ECUs

Description

After the long awaited Suzuki DR-Z4 update, we knew that our WORX Program could make it even better, and it certainly did! After some time on our in-house dyno, we developed an ECU tune that not only optimizes your Suzuki for your aftermarket full system exhaust, but it also unleashes additional performance across the entire rev range, especially above 7500 RPM. Compared to the stock setup, you can expect as much as 9% increase in peak power, and over 16% increase in the top end before the rev limiter. That's an additional 4% in peak power and over 11% increase in the top end when compared to the exhaust alone. Don't leave easy power gains on the table, get your ECU flashed and experience the difference that the TST WORX Performance ECU Tune unlocks.

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, remove your O2 sensor 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: Is a full system exhaust required for the tune to work?

A: Yes - This tune was developed with the Yoshimura RS-12 full system exhaust and it must be paired with the RS-12, or similar, full system exhaust to achieve expected results. Failure to do so can compromise engine reliability and performance. r.

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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