Add ons are sold as separate maps that can accompany a custom e tune. Add ons can NOT be purchased by themselves. You must purchase a custom E Tune at the same time as your add on. If we have already E Tuned your vehicle in the past and you would like to purchase an add on, contact us.
An upgraded in tank fuel pump is required for ALL straight e85 map add ons.
An upgraded high pressure fuel pump is required for ALL 2015-2021 Subaru WRX straight e85 add ons.
Contact us with questions or clarification.
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