

It is the responsibility of the customer to determine if their modified vehicle complies with applicable laws. 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. 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. and Canadian laws and regulations. Steeda Tuning will not change, remove or alter any emissions control devices on your vehicle. Installation of this part on a vehicle that is driven on public roads may violate U.S. #. This part has been designed and is intended for off-road application only. *2020 Tune is only available for the 2.7L Ecoboost and 3.3L N/A* Warning: Not approved for sale in California or states that require a California E.O. In addition, the X4 offers improved datalogging capabilities right through the device or when used in conjunction with a laptop and SCT's Live Link software.

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. The X4 features a larger, brighter, easy to read color screen with auto dim and user adjustable portrait and landscape modes. This unit is a smaller, more compact device than the X3 it replaces. SCT's X4 features great improvements in design and use.

Ford Mustang owners don't have much choice in the matter anyway because most tuners prefer tuning with SCT.SCT's X4 tuning device is the latest evolution of the X series of tuning devices from SCT. Overall I give it 4 out of 5 stars and would recommend. SCT tech support was prompt and helpful during the two occasions I needed their help which can go a long way when dealing with finicky devices like this one. The more compact size of the device makes it feel more portable and the general fit and finish is better than the older models.ĭatalogging with a laptop/Livelink software can be a bit challenging as it seems to be inconsistent on whether it can log starting with the key on/engine off, or log regardless of engine status as long as the key is on. The screen layout can be customized to see more (or less) on the screen while datalogging with the handheld. The handheld is an improvement over the outgoing X3 as the LCD screen makes it easier to read at night. Good quality, but software could use some improvementīought this to datalog and tune a Mustang GT.
