Yeah, I'm thinking of running this one until Christmas time, once I get some christmas money I may switch it out for a SCT tuner. From what I have read everyone swears by them. I really have no clue what has been done to my truck, since I bought it with 192,000 miles on it. I wish I knew but I don't want to take the chance of having to replace the studs or anything right now because I don't have the extra cash. I really just got this Edge to see if my fuel economy would go up at all.