5 Star Tuning SF4/X4 Power Flash Tuner w/ 3 Custom Tunes (SCT-7015)
Fits 2017-2020 (Excl. Raptor & 2019 Limited) 3.5L EcoBoost
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A handheld tuning device (the SCT SF4/X4) preloaded with three custom tune files from 5 Star Tuning. Unlike a single fixed tune, this device lets you plug into your truck and switch between different saved tunes yourself.
why this one — Because it's a handheld unit with three tune slots, this option gives you flexibility to switch between tune settings (for example, different fuel octanes) without having to send your truck back to a tuner.
Can affect powertrain warranty.
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