10
X4
SECTION 3: PROGRAMMING YOUR VEHICLE
3.1 INSTALLING A PRELOADED TUNE FILE
Which tune file do I choose?
GASOLINE ENGINE:
Tunes are based on Octane, make sure you choose the correct octane rating based on
the octane you are running in your vehicle.
• 87 Octane
• 91 Octane
• 93 Octane
DIESEL ENGINE:
We oer a few tunes based on what you’re going to be doing with your truck.
• Street: Less power than Performance. Moderate gain over stock, safe for light towing,
under 5k lbs.
• Performance: The most aggressive preloaded diesel tune. Good for everyday use, racing,
economy but not recommended for any type of towing.
• Tow: This tune should be used when towing any significant load. With this tune shifting is
towing-centered.
How do I know what the Options do?
Section 3.4 contains a list of options, their functions and a brief explanation of
those functions.
NOTE: Adjustable Options vary for each vehicle and are not available on
all vehicles
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