Originally Posted by 04 Stroke
going from a can tune to a custom tune do i need to put the truck back stock before i load the custom tune? First custom tune and I cant wait!!!!!
First, hook up your SCT to your PC and save a copy of your stock tune to your PC. Just in case you have issues, you can get a recovery file from SCT to get your truck up and running again.
Now I've seen members do this before, play around with their SCT on a weekend. Then by dumb luck, they have issues with loading tunes or worst, no start. So now they end up with a truck that don't start, and SCT is closed for the weekend.
I know your excited to try out your custom tunes, just be sure you understand that if there is a issue, the forums can only do so much.
Now for your question, it's recommended to return to stock when ever you switch tunes, BUT most of us don't. We just jump from one tune to another. You need to decide if the reward is worth the risk. I personally don't return to stock when switching tunes.