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The X4 Power Flash arrives Pre-Loaded with DYNO Proven tune files that INCREASE HORSEPOWER and TORQUE! Programming your vehicle with one of SCT's pre-loaded performance or fuel economy tune files is as easy as 1-2-3.
A lot more responsive, better acceleration, better harder shifting, and much more. I do like the available options that are given in the preloaded tunes. Hopefully pretty soon I can use this x4 and go get it dyno tuned. If you are gonna spend money on your vehicle to get performance, the SCT programmer is a great way to start.
SCT X4 Tuning Guide & Troubleshooting SCT's X4 device is a powerful tool, but figuring out where to start and how to get your custom tunes loaded into your truck can be tricky. We put together this guide to help walk you through what you need to do to get your 5-Star Custom Tunes loaded when using an SCT X4 device.
How To Set and Edit Gauge Inputs for your X4 What’s the Difference Between the X4 and the Livewire? Do I Need a Custom Tune for an Aftermarket Exhaust? Can I Still use my Tow-Haul Button after Tuning? Do you Make and Sell Custom Tunes?
The SCT X4 handheld programmer is one of the most popular tuning devices in the EFI tuning industry. Simple to use and loaded with tons of other features it definitely makes the SCT X4 stand out amongst it's competitors.
20 reviews for 1997-2019 5.4L, 6.7L & 6.8L RV/MOTORHOME! 5 Star Tuning X4 with the 5 Star Tune (2017 MotorHome Magazine Reader’s Choice Award Winner!) 7015FS. Rated 5 out of 5.