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The digital revolution has just arrived on your dashboard. Celebrate technology at its finest with a SCT X4 Power Flash Programmer (49-State Legal), the most innovative tuner in the SCT lineup. More compact and ergonomic than the X3, the X4 boasts a brilliant full-color LCD display that puts huge horsepower, torque and throttle response gains right at your fingertips.

Packed with dyno-proven tunes tailor made for your ride, the SCT X4 Tuner unleashes your full performance potential. But that's just the beginning. With full control over a wide range of critical engine parameters, you can create and store up to 10 custom tunes for any situation, from towing trailers up steep grades to passing slowpokes on the highway.

You don't have to get your hands dirty installing the SCT X4 Flash Tuner. Just plug it into your OBD-II port, follow the on-screen prompts and you're ready for action. Plus, it doubles as a digital gauge set, giving you real-time readouts of all your key speed stats. And with WiFi built in, you can update your X4 without ever connecting it to your PC. It even comes with a 1-Year Warranty.

SCT X4 Power Flash Programmer (49-State Legal) Customer Reviews

Average Rating

19 Customer Reviews


Reviewed by Charles D R (San Antonio, TX) Reviewed for a 2011 Chevy Camaro — Nov 11, 2015 8:26 PM

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Am a novice when it comes to tuners. Was hoping for more adustment options overall for my SS. Tuner not very user friendly when it comes to connecting with home WiFi. Wish the manual or mfr website had more detailed guidance on all the functions. Will need to read up more on the more complex settings like spark plug adjustments, etc to get my monies worth.

awesome performance

Reviewed by Patrick D (kansas city, KS) Reviewed for a 2007 Ford F-250 — Oct 14, 2015 4:15 AM

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I recommend this product to anyone that needs a programmer for performance for their vehicles.

good product

Reviewed by Jordan H (OXFORD, AL) Reviewed for a 2006 Ford F-250 — Apr 21, 2015 5:42 AM

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This was reccomended to me by thoroughbred diesel to delete the EGR, is doss that and I changed my tire size so my speedometer is right, and it reads and deletes check engine codes

Fantastic Tuner

Reviewed by todd j (MUKWONAGO, WI) Reviewed for a 2014 Ford F-150 — Apr 19, 2015 8:48 AM

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I purchased this tuner to beef up an already very powerful Coyote 5.0L 2014 F-150 FX4. Within 10 min the tuner memorized my factory codes & tuned my F-150 to the 93 octane . You can pick between which type of gas you run . Immediately when I turned the truck on I saw a major difference . You can step it down @ 5mph,35,65 or 95 & the truck just rips . I was told the HP boost is about 25, but seems like about 40-50. Mileage is even somewhat better unless you keep stomping on the gas. Great tuner.


Reviewed by David B (Tipp City, OH) Reviewed for a 2008 Chevy Silverado — Mar 09, 2015 8:49 PM

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Software did not seem to load properly...after contacting SCT, found that the instructions to update the firmware were wrong. Loaded fine after a long online update. JK runs fine on 87 octane program, a noticeable improvement in midrange power...some on the top end. Too early to tell if any fuel mileage improvement.

SCT X4 Power Flash Programmer (49-State Legal)

  • $399.00
  • Free Shipping
  • Ships By 12/01
  • What Do You Drive?

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