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EcuTek BMW S55 Kagan Custom Tuning (F22/80/82/83 M2/M3/M4,) consist of these variations and more.

  • Stock Fuel System, Port Injection

  • Full E85 (Stock Fuel System/Stock Turbo or Fuel System Upgrade/Aftermarket Turbo)

  • Pump Gasoline - 91 Oct, 93 Oct, E30, E50

  • Race Fuel (ex. 100oct, MS109, C85, X85, Etc)

  • Stock Turbo or Aftermarket Turbo

  • Requires EcuTek

  • If running an Advanced Third Party PI/Methanol/FlexFuel controller such as the Motiv Reflex: Requires Advanced Port Injection/Methanol Injection/FlexFuel Controller (i.e. Motive Reflex etc) Setup/Tuning (click link to purchase)

  • Includes all revisions needed for your current setup/fuel, and support for 1 year following the purchase date (excluding turbo upgrades, fueling changes and/or any other modification that will requires a re-tune).

  • These are the average results that can be expected with stock turbo on an average reading Dynojet in good ambient conditions:

    • E50-E60: 590-630whp (Modifications will vary in power output on stock turbo)

    • 93 Octane Pump Gas: 490-525whp (Modifications will vary in power output on stock turbo)


When ordering please put your EMAIL that you will be using with your EcuTek account for the tune request. If no email is provided or you are using multiple emails, there is no way for me to confirm a tune request to the order #. This not only slows down the process but takes time to track down order X to EcuTek tune request Y.

NOTE: By purchasing this custom tune, you agree to our Conditions / Vehicle Compliance Waiver.

This is a digital file. Therefore there can be no refunds or warranty claims per our Return Policy.  By purchasing the e-tune you acknowledge this fact and agree with our Terms and Conditions / Vehicle Compliance Waiver. E-tunes must be paid in full and scheduled before any service is provided