Adding modifications and need an upgraded tune? No problem! This product is intended for customers already running a JSTuned ProTune who have decided to add basic modifications to their car. This can also be used to add an e85/WMI tune to your map set (if applicable). If you have more than one tune that needs to be revised due to modifications, a map revision needs to be purchased for each tune. After purchase, please email our tuner at [email protected] using the same email chain that was used during previous tuning to notify us that you are ready to begin revising your tune. Curious about what kind of power you will see with a custom tune? Check out our blog on ST/RS Basic Modification Paths and Power Estimates! *Tunes are non-refundable once purchased *Don't forget to throw in a set of NGK Spark Plugs when you order your custom tune! Upgrading your spark plugs or simply changing them out to a new set is just one step to ensure that your car is performing properly during the tunng process! *We also have tons of JST Swag to choose from when you decide to join the JST team!
