I recently bought a DiabloSport Intune I-1000-DCX for my 2013 Dodge Charger RT. I really don't know much about tuning so, I let my buddy do it. He put the 93 Octane tune on. He didn't realize that I had 87 octane fuel in. So once I drove it for a couple days I took the tune off and went back to my original settings. My car isn't running the same. The gas mileage has went down to 12 to 13mpg. I know this computer chips in the cars are pretty high tech. I heard that they will eventually go back to normal. How long does that take???