SCT X4 Tuner + Steeda Tunes

£499

No one does tuning better for your Fast Ford, be it Mustang GT, 2.3 Ecoboost, Focus ST or RS than Steeda.



Steeda were the first company authorised by Ford to sell ECU calibrations in its dealerships, and our great reputation for "factory plus" style tuning has grown every year over the last near 20 years. Smooth, reliable safe power.

If you want monster numbers, rushed out as fast as possible, then look elsewhere.

If you want to rely on companies who knock out a Ford tune before moving onto a Volkswagen tune, then an Audi tune, then a BMW tune, and so on, then go right ahead.

But it you want a company who ONLY tunes Ford's and will KEEP tuning them and revisiting the tunes and using the tunes ourselves on a daily basis on both road and track, then you will only want to deal with Steeda.We regard our tunes as the most advanced, safest, most reliable custom tuning available on the market.

Steeda Certified Custom tunes pass our rigorous standards for performance, durability and driveability and have an impeccable safety record. Developed and tested on our in house dyno as well as through hundreds of hours of field testing both on the street and some of the most demanding race tracks in the country, you can be sure our tunes will deliver safe, reliable power.

Not only that but our Steeda "tunes for Life" program means that with Steeda you buy only once! We can set you up with an appropriate first tune for your car and then as you add approved hardware, we will update your tune for free!


SCT's X4 tuning device is the latest evolution of the X series of tuning devices from SCT. SCT's X4 features great improvements in design and use. This unit is a smaller, more compact device than the X3 it replaces. 

The X4 features a larger, brighter, easy to read color screen with auto dim and user adjustable portrait and landscape modes. The device holds up to 10 custom tunes which can be supplied by SCT custom tuning dealers and also includes pre-loaded strategy files from SCT.

WATCH THE SCT X4 Videos HERE

Now with built in WiFi, the device can be connected to any wireless network and will allow you to install any software updates released by SCT right through the device without a PC. 

In addition, the X4 offers improved data logging capabilities right through the device or when used in conjunction with a laptop and SCT's Live Link software. 

Note: For custom tuning applications please provide the vehicles 4 digit processor code with your order. 
You can contact us in advance to see how to do this, or wait to receive your X4 and use it to "read" your vehicle

Warning: This part has been designed and is intended for off-road application only. Installation of this part on a vehicle that is driven on public roads may violate local laws and regulations. 

Product Benefits

  • Larger adjustable screen with landscape and portrait modes
  • Holds up to 10 custom tunes
  • On screen data logging and monitoring / livelink connection to laptop
  • Wireless connectivity
  • Steeda "TUNES FOR LIFE"
  • Normally in stock in the UK
Fits Vehicle Models 

2014 Ford Focus - ST 
2013 Ford Focus - ST 
2015 Ford Mustang 2.3 Ecoboost
2015 Ford Mustang 5.0 V8
2005 - 2014 Ford Mustang


Note: Federal and several state and provincial laws prohibit the removal, modification or rendering inoperative of any part that affects emissions or safety on motor vehicles used on public streets or highways. Steeda Autosports assumes no liability for any violations arising out of any federal, state or provincial emissions or safety requirements on motor vehicles arising out of the customer®s modifications and/or use of Steeda products. It is the responsibility of the customer to determine if their modified vehicle complies with applicable laws. 

This limited warranty is the only express warranty applicable to Steeda Autosports products. Other rights may arise or vary from state to state in the United States. Steeda is not responsible for any time for which you may lose the use of your vehicle, any inconvenience you might be caused, the loss of your transportation or any part thereof, or any other incidental or consequential damages you may have.

1. Store Orders General Information

All orders are subject to product availability. As U.K. stock of items increases, more and more products are available for delivery within 3 working days. However many items that we offer might only be available at the manufacturer and can take time to get in for you.

Wherever possible we aim to fulfil all orders within 15 working day's. In instances like this we will inform you and aim to keep you updated.

In extreme instances some products may be manufactured to order, in these instances delivery times can be over a month from the purchase date. We will contact you to let you know if this is the case before we place the order with the manufacturer.

In any case, please feel free to contact us for updates on your order once it is placed.

2. Services General Information

When booking services with us the booking date will reflect stock availability. In some cases we may require a deposit from you at the time of booking.

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