EFI Live GDP CSP4 Support Package (2007.5-2009 6.7L Cummins) o_tcm_sn giving you complete control over

giving you complete control over performance adjustments on the go

tailored to push your diesel engine to its limits

designed specifically for 2006-2010 Duramax models

2023-2024 Trucks require 155-01404 downpipe

EFI Live GDP CSP4 Support Package (2007.5-2009 6.7L Cummins) o_tcm_sn giving you complete control overThe 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.