Originally Posted by
throttle jockey
The benefits of a handheld tuner go beyond just a tune. Handheld tuners allow you to datalog for tuning and trouble shooting purposes. Depending on which handheld you use you might not even need to use a laptop to monitor parameters. For example, the old DiabloSport Predator allowed the user to view several parameters right off the built in screen. The Predator is old technology at this point and the SCT X-Cal handhelds are more desireable nowadays. Older X-Cal models don't have a display screen so a laptop is required but the latest version (X-Cal 4) does allow you to view data via a built in screen.
If you do upgrade to a handheld tuner a fresh tune will likely prove beneficial since the years and miles of additional wear and tear on your truck may contribute to the current tune being less than optimal for the truck.
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