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Discussion Starter · #1 ·
http://www.greendieselengineering.c.../Colorado-Canyon-Duramax-Hot-Tune/2_55.action

Just a heads up, just released today. Their tune is a “one does all” map with factory safeties still in place. IIRC most tuners disable those for their “play tune”.

This is most likely the tune I’ll go with this summer. They spend a large amount of time on all their tunes and don’t release them until after doing thousands of miles on it.
 

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I’ve been running their off road tune for three weeks and 2,500 now. No issues at all. I’ve towed my 5,500 lb camper, crossed a couple 11,400 passes and it runs great. Small puff of smoke at startup and none seen after that.
 
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