Subaru VB WRX E50 Tune Add On

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This is option is for getting a separate E50 tune for you car if you are already using a custom pump gas tune from us. You must already have an existing tune from us to use this ad d-on option. This tune add-on works for any modifications and is a custom tune where we will review logs and adjust the tune until everything is perfect. An E50 blend is really safe way to use ethanol without having to worry about monitoring the blend at the pump or running a Flex Fuel kit. Simply blend a ratio of 7 parts E85 to 3 parts Gas to end up a blend of E50-60 depending which this tune safely supports. Show more