3.3 Returning your Vehicle to Stock
1. Connect the X4 to your vehicle’s OBD II service port using the OBDII cable provided in the packaging.
2. With the unit powered on and connected to the vehicle, highlight and select the “Program
Vehicle” option.
3. You will next see the “Street Use Notice” disclaimer, here you will be able to highlight and
select “Return to Stock” at the bottom of the screen. (use the left arrow button to highlight)
4. Depending on your device settings you may be prompted to “Turn Key On”. If so, please turn
the ignition key to the “On” position but do not start the vehicle, Select “Continue”.
5. Select “Continue” again to confirm you would like to return the vehicle back to stock.
6. The next screen, possibly two, will differ between vehicles. You will be prompted to “Turn Key
Off” and/or “Turn Key On”. It’s important here to follow the prompts from the device.
7. X4 will now upload the original file saved from when you tuned the vehicle (“Stock File”) back
into the vehicle.
8. After this is complete the device will display a “Download Complete” screen. You can now turn
the key to the off position. For GM vehicles you may see a “Power Down ECU” screen while the vehicle completes some
power down procedures.
9. You have now successfully returned your vehicle to Stock.
3.4 User Adjustable Options Explained
User Adjustable Options are contained within the pre-loaded tuning files. You will be prompted to Adjust Options during the tuning
process. The Adjust Options menu will appear and you will navigate through the options using the key pad. To enter the option or select
the option, use the approve button. To cancel the option or go back to the previous screen, press the cancel button.
The user adjustable options allow you to adjust common vehicle parameters such as the list provided below. The available user adjustable
options for your vehicle will appear in the on-screen list. Use the arrow up & down keys to scroll through the options list and use the
select key to enter and modify any option. Once you have selected each option to change, you will be prompted to save all adjustments.
Once the adjustments have been saved, you will be prompted to continue the upload process.
NOTE: Adjustable Options vary for each vehicle and are not available on all vehicles
DIESEL VEHICLES SPECIFIC OPTIONS:
PERFORMANCE
STREET
TOWING TRANS
ONLY JAKE BRAKE
LOCKED AT CT
LOCK IN 1-2-3
AGG. TOW HAUL
The most aggressive preloaded diesel tune. Good for everyday use, racing, or economy but not recommended for any
type of towing.
Less power than Performance. Moderate gain over stock, safe for light towing, under 5k lbs.
Should be used when towing any significant load. Shifting is towing centered.
For Heavy Loads. Engine and Boost left stock. Trans Only tune.
Exhaust brake to increase engine braking while coasting. Lowers brake temps.
Keeps the torque converter locked during decel to aid in engine braking.
Locks the torque converter in 1st, 2nd and 3rd gear.
More aggressive shift schedule keeping the engine in its power band longer.
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