I will be using a flex fuel content analyzer with a gauge to show ethanol %. Zeiltronix makes a great kit. Each of the map will be tuned according to the %. Any standalone running e85 flex fuel sensor will take a tremendous amount of time to tune the compensation map, so Uprev will be no different. A 10% difference in ethanol content can be compensated by the ECU under closed loop, so exact % tuning isnt critical.
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