This tune update is for getting an update to an existing tune to enable and tune a for a flex fuel kit. We will work from your existing tune and tune for ethanol blend points up to the max ethanol blend you can find. This update requires a Cobb Greenspeed software compatible flex fuel kit. Existing maps: Pump Gas Only - choose this option if you only have an existing pump gas map from us Pump Gas and Ethanol - choose this option if you have both pump gas and E85 maps from us If you only have a pump gas map with us, we will update your tune for flex fuel and then fully tune in for E85 blend. If you already have pump gas and an ethanol map from us, we will turn on flex fuel, blend your existing maps together and then check logs from there.
