BrockFLASH ECU Stage 1-F With Fuel Tune Z900 (17-22) Must Send Us Your ECU


BrockFLASH ECU Stage 1-F With Fuel Tune Z900 (17-22) Must Send Us Your ECU

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Let the Brock's Performance in-house team flash your stock Kawasaki Z900 ECU (Engine Control Unit) to our exacting specifications. The Stage 1-F BrockFLASH™ with fuel tune for the Z900 is designed to work in conjunction with your Brock's Performance full exhaust system, stock or aftermarket air cleaner (Sprint Filter P08 F1-85 recommended) with *No aftermarket fuel tuner required (Dynojet PCV, Bazzaz, etc...)

Brock's custom fuel mapping is located inside the ECU, and targets optimized all around driving as well as high-performance perfection. Take your Z900 to the next level of performance with the BrockFLASH™ ECU:

Stage 1-F Z900 BrockFLASH™ ECU Features Include:

  • Available for US and Canadian Model ECU's ONLY
  • Service performed in-house (1-2 business day typical turnaround time) using
    Guhl Motors based morDefy software to Brock’s tuning specifications
  • Increased horsepower & torque throughout the entire RPM range
  • Derestricted secondary throttle blade settings to allow 100% throttle
    operation without sacrificing smooth operation
  • User diagnostic reset enabled (click for reset procedure demonstration video)
  • Increased high RPM limit
  • Fuel table mapping for maximum pump gas performance
    (no PCV or Bazzaz unit required)
  • Removes top speed limiter
  • Reduced fan temp
  • Remove PAIR code/light
  • Remove O2 sensor code/light
  • Deceleration fuel cut disabled (normal/stock is enabled)
  • + Many more!
  • Fuel tuned ECU flash designed for Brock’s Performance exhaust only
  • Note: If the bike is equipped with a fuel tuned BrockFLASH ECU or Dynojet PCV, removal of the OEM oxygen sensor is required to prevent drivability issues
  • Important: BrockFLASH ECU Installation Procedure (PDF)

Dyno Chart:

To order, complete the ECU Flash Release Form (release form may be included in your package or emailed to Then checkout online and send us your ECU freight prepaid and insured ($1,000 declared value coverage recommended) to:

Brock’s Performance - 4064 E. Patterson Rd., Dayton, OH 45430
Please write your order number on the outside of the box.

ATTENTION: FOR COMPETITION USE ONLY! ECU modifications will void your factory warranty. Increased high RPM limits can induce additional strain which could lead to premature engine failure.

Please see our Terms and Conditions for additional information:
Brock's Performance Terms and Conditions

For more information on Guhl Motors Terms and Conditions click here

Product Videos


  • 5
    Couldn’t be more happy!!!

    Posted by Colten Roscoe on Apr 19th 2022

    Absolutely thrilled with the flash, bike runs so smooth now! I do recommend the stronger clutch springs due to slipping.