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TUNING THE VEHICLE
6. The HDGT will display the Phase 3 initiation screen.
7. Press the top right button to Continue.
8. The HDGT will provide a list of available engine tunes.
Select the tune you prefer:
• Stock: Original factory power levels.
• Economy: 6-10% improved fuel mileage
(with good
driving habits)
.
• Power/Economy: 10-12% improvements in fuel mileage
(with
good driving habits)
plus approximately 10% gain in
engine power.
• Power Tune: 20% power improvement with no economy gains.
IMPORTANT NOTE:
After the tune is selected, do not unplug or disturb the HDGT. If the
process is interrupted, the engine computer may need to be recovered.
Continue
GT status: UNLOCKED
Phase 3:
GT is Ready to
Download to Truck
...Press Continue...
DOWNLOADING
SELECT TUNE
Power/Economy
Economy
Stock
UP
DOWN
SELECT
