We will verify your trucks firmware / software version and update it (if required) for free before we load the Blackhawk tune.
The tunes do not modify the OEM ID, which means it will always report back as "stock."
While we do not guarantee warranty status, none of our customers have had any issues with warranty covered repairs after tuning.
The Blackhawk tunes (and the VFTuner platform they are build from) are tested on our own vehicles! This can mean months of testing before we even get updates to utilize for our custom calibrations.
Our tune does not calibrate the speedometer, however there are other aftermarket options available.