This product is for EXISTING Lund Racing Customers who have already purchased tuning for their vehicle. Lund Racing Custom Tunes are created specific to your vehicle based on your exact modifications. This makes our tuning much more than just a typical "canned" tune. Lund Racing has been setting the standard in Ford tuning for many years in the past, and for many years to come. If you need a tune revision, please click the link to the support page on our website. (http://support.lundracing.com) You must sign up, and submit a request with your original order number from wherever you purchased the original tune. You are going to need to provide us the PCM Code, Flasher Serial Number, and full modification list. PLEASE DO NOT PURCHASE ANOTHER TUNE FROM THIS PAGE! Our lead times vary depending on volume of requests and our availability. We are always in extreme demand. Tunes are typically sent out within 10 BUSINESS DAYS. If your order requires urgency, please specify in the "Modification List" section of the tune form. We will do our best to meet your turnaround time. Thanks for your patience.Learn More