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· Hi, I'm Earth. Have we met?
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Adding hp improperly can hurt an engine such as to much timing, to much fuel, not engough timing and so on . all these tuners on the market are good products and are made right so you dont damage your engine. If you run excessive egts for to long of a time it will melt someting eventually.

When towing i keep my egts under 1200* but on the drag strip i have peged the 1800* gauge more times than i are to mention with no issues to date.

With these trucks if you keep it less then 500 hp you are pretty safe, but just remember when adding hp there is always a chance of anything breaking even on a stock truck!!!
 
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