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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16
Important Note: This harness is designed to work in conjunction with our GDP Universal 5 Position SOTF/DSP Switch
efficiency
These are guys that don’t want the MM3 device in each vehicle
improving drivability and eliminating sluggish performance
and smooth during acceleration
EFI Live GDP Single Support Package (2001-2010 6.6L Duramax) upgrade_file Important Note: This harness isThe EFI Live platform has the ability to tune multiple vehicles with one unit. For those wanting just a tune and not the actual device, we are able to offer tunes only. This requires the purchase of a new support pack for the VIN# of the new truck being tuned. Please note that this package includes the tune file exclusively and does not come with the EFI Live device.