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I am posting this for a buddy of mine. He has an 03 6.0. He got a SCT SF tuner about 2 months ago - with the default tunes(not custom tunes). He has had 2-3 different revision to these default tunes due to missing/surging. Are these type of issue normal with the default tunes?? SCT is saying its the truck not the tunes. But before getting the SCT he had a superchips tuner and never had an issue. Any sugestion as to what he can test/try?
2005 Black GMC CC 4X4
Ya know, I just put an SCT xtreme street file in my truck and it seems that sometimes when i get on it its lame and then i let off and lay into it again and the power is right there, I don't know if this is anything like your buddies problem.....but I can't figure it out, maybe the truck is getting used to it or the black smoke is getting to my head? : Hopefully someone has some an idea what the problem is.....
06 6.0 True Blue x tra cab off road pkg. Clear Clearance lights, straight piped 3.5" all the way, SCT xtreme street,zoodad,in dash Clarion, sub and amp.