An eTuning Revision is strictly for those that have ALREADY BEEN TUNED by us but require further tuning services because of parts being changed or other changes being made to the vehicle that require further tuning. There is also an option for an extra fueling add-on. Many of our customers decide they want a second fuel map for ethanol or methanol injection in the middle of a tune or shortly after. This option is the difference between a single fuel tune and a dual fuel tune and is slightly more than just the cost of a revision. Please select the appropriate option for what you need and we will have our tuner get in touch with you as soon as possible.