How E-Tuning Works

How Yosh Tuned E-Tuning Works

E-tuning is a custom remote calibration for your vehicle and setup. You upload a file, record the logs Yosh Tuned requests, and receive revisions by email using a compatible Hondata or KTuner system.

1. Choose Your Service

Choose the full e-tuning service for your installed platform: Hondata FlashPro, K-Pro/S300, or KTuner. If Yosh Tuned already completed the tune for this setup and you have since made a significant change, choose the Existing Customer Re-Tune. If you are unsure, read Which Tune Do I Need? before purchasing.

2. Select Your Setup and Check Out

Select the vehicle, setup and fuel options that match your car. Provide the requested details and keep your order number. Accurate information helps Yosh Tuned prepare the correct starting calibration.

3. Prepare the Vehicle

Review the Pre-Tuning Checklist and make sure the car is mechanically sound. Fix leaks, misfires, fuel-pressure problems, failed sensors and other faults before logging. Yosh Tuned will provide any setup-specific spark-plug or wideband instructions; do not assume a plug or gap listed for someone else's car applies to yours.

4. Receive Your Starting Calibration

Once the required information is received, Yosh Tuned prepares the initial file and tells you what to log. It is an early calibration for checking the setup, not the finished tune. Many starting files have a 6,000 RPM limiter that may be raised as tuning progresses.

5. Record and Send the Requested Logs

Follow the instructions sent with your file. Initial logs may cover idle and normal driving; later requests may include controlled load or a specific pull. Do not perform a WOT pull until Yosh Tuned specifically requests one. Send each log separately in the same tuning email thread with your order number. See Datalog & Revision Instructions.

6. Review and Revisions

Yosh Tuned reviews the logs and sends a revised file or next steps. Repeat only the requested tests. If the car misfires, makes an unusual noise, shows a concerning AFR reading, has a fuel-pressure or boost-control problem, or otherwise behaves abnormally, stop the test, save the log and report it. A fault may need repair before tuning continues.

7. Final Calibration

When the required areas are completed, you receive the final calibration for the setup that was tuned. Significant later changes to fuel, injectors, sensors, engine parts or boost hardware may require a re-tune. Contact Yosh Tuned before running the old file on a changed setup.