Skip to content
WülfMX.comWülfMX.com
Shopping Cart 0
Close Back
  • Home
  • ECU's
    • ECU Re-flashing service
    • ECU Remapping Service Form found here
    • WülfMX OEM Preloaded
  • Engine Rebuild Parts
    • 150 TBI conversion kit
    • OEM Cylinders
    • Wossner Complete Top End Kits
    • VHM Complete Top End Kits
    • OEM Complete Top End Gasket Sets
    • Drop-in OEM cranks
    • Connecting Rod Rebuid Kits
    • Main crank bearings and seal kit
    • KTM OEM Clutch Kit
    • "Race" Clutch Bellville Washer
    • High Pressure Radiator Caps
    • Flexible Idle Knob
  • Electrical & Sensors
    • Wiring Harness
      • Wake Up Connectors
    • Fuel Pump
      • Fuel Pump Replacement Filter
    • Crank Case Pressure Sensor Kits
    • TPS Tool
      • TPS PigTail
  • Technical
    • Service Manuals
    • WülfMX Tools, Misc Accessories, and more!
  • Contact Us
  • FAQ
    • Login
    Close
    Your cart is currently empty.
    0

    Total: $0.00

    Taxes and shipping calculated at checkout
    View Cart
    Continue browsing
    Close
    Home/Collections/KTM TBI ECU re-flashing service 125SX 250SX 250SX 300SX
    KTM TBI ECU re-flashing service 125SX 250SX 250SX 300SX
    Home/Collections/KTM TBI ECU re-flashing service 125SX 250SX 250SX 300SX
    WülfMX.com

    KTM TBI ECU re-flashing service 125SX 250SX 250SX 300SX

    $299.99
     
     

    *Please read the fuel, octane, and premix requirements before committing to purchasing this service*

    The 23'+ TBI ECU's have been giving people fits for the past year due to being "locked", and not adjustable.  This has been extremely frustrating to the mechanics, riders, and families. 

    For years, we have all been accustomed to making fueling changes with the carb, head mods, and changing the tune of the bikes to suit our needs.  The "tune-craft", so to speak, that we all have spent years trying to perfect, has all but been removed from our routine, UNTIL NOW.


    WülfMX has tuning solutions for the 125/150/250/300sx TBI's, that has taken a yr to perfect, and it's amazing! 


    Changes to the pressure tables, ignition, fuel delivery, and power-valve have been changed to give a much more favorable tune to the motor so it runs strong and crisp.

    We have also been running the motors with forged pistons and removing the thermostat for a more balanced running bike.

    Since these changes are crucial to how the bike runs, we have specified a min octane rating of 100, and recommend a 40/1 ratio for all the bikes with a high quality premix that has a flashpoint of 300 or more.  We have only tested oxygenated fuels up to 5.6%, results may vary.  We have tested many oils and have found great metal to metal engine protection with Motul 710 for single track  or slower MX, (FP of 310 deg), and Motul 800 for hard MX, (FP of 480 deg).

     

    You must be able to adjust and set your TPS values with a TPS tool, or a volt meter and pig-tail set up.  Those items can be found on the Electrical and Sensor page.


    We offer a 30 day money back guarantee on the re-flashes.  If you are unhappy with the the re-flash, simply e-mail us with in the 30 day window, (day 1 is the day you receive the ECU back into your possession), and we will make arrangements for you to return the same ECU that was re-flashed by WülfMX back to it's original original OEM state.

    If the ECU was modified in any way shape of form by any other company within the 30 days, our 30 day warranty is void and no refund will be given.



    Share
    Share on Facebook X (Twitter) Pinterest
    ×

    Shipping

    Orders over $100 ship free

    *some exclusions apply to exhaust systems, cranks, and ECU's.*

    Contact info

    Support@wulfmx.com

    Hours Mon-Fri 8a-4p

    860-942-7175

    Sat/Sun Closed

    Follow us

    FacebookYouTubeEmail

    Newsletter please subscribe!

    American Express Apple Pay Diners ClubDiscoverGoogle Pay Mastercard PayPalShop Pay Visa
    Copyright © 2026 WülfMX.com. Powered by Shopify
    Popup

    Stay up to date on the latest product releases, special offers & news by signing up for our newsletter.

    Read our privacy policy.