Truck is a 2001 GMC Yukon 6.0l 4l60E auto DBW with egr delete, a cam, headers , cat delete
ECM-P01
PCM-12200411
OS-12212156
Before the tune it was able to rev higher than that but after the tune it just doesn?t rev passed 2500rpms. The idle is decent which could use some improvement but the main issue I?m trying to fix is the rev issue. Took it for a drive and it drives decently it?s just not going passed 2500rpms.