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After following all instructions the program would not load, a call to edelbrock was not helpful. A tech promised me a call back before the end of the business day, that was three days ago. As of now I have a $7,000.00 wall decoration. Will update if anything changes. :( After a week I called back and loaded the program and as instructed tried to return the vehicle to stock. I was unable to return the vehicle to stock and after two weeks talking with techs from edelbrock and SCT the programmer manufacture. I have ben unable to drive the truck for the two weeks.Then I was advised to install the supercharger. It does not work. Also there are electrical problems that no one can figure out at this time. Still cannot drive the truck and am back on the phone with tech. This is the nightmare I cannot wake up from. Hours on the phone every night for 2 weeks, 3 days to install with the $500 required fuel pump and still unable to drive.