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      01-06-2022, 08:48 PM   #74
Soylent
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Drives: 2021 M4C
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Quote:
Originally Posted by 0Camus0 View Post
That's the main purpose of the flex fuel kit, it connects one of the pins from the E% sensor to the ECU wiring and the ECU will know the current E % content. Then the ECU will adjust the correct AFR and timing tables for that particular blend in real time.

Granted, you need your tuner to provide a tune that takes advantage of the flex fuel kit. On the Supra I have the Visconti flex fuel kit and it works seamlessly with Ecutek, my tuner (Marin) made it work.

If you don't have the flex fuel kit, you may need to flash each time that you want to change blend though.
That's good that this car's ecu can handle this and allow you to pump E85 at the station without the concern of measuring. Some car ecu are not able to handle this like the Focus RS for example.
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