Budget diesel truck mods: GM Duramax edition
First and foremost let me say that if you are concerned with warranty then this thread is not for you. Just hit the back button and move on to the next thread if you are concerned about warranty or d...
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No way your picking up 3-4MPG with a simple plug and play. That is a pipe dream... Only way your going to see those kind of gains is by completly removing all emissions equipment and run a delete tune.
