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2006 gmc envoy_denali_xl
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24 Posts
Discussion Starter #1
DoD/AFM turned off via EFI Live but I am not as sharp on these as I am on Diesels, anyone able to help me squeeze a few MPG's and maybe some additional ponies out of this beauty?
 

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2007 gmc envoy_denali
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19 Posts
Don't expect much. You may be able to globally bump timing by about 2 degrees and you ought to definitely bring in total timing sooner. If you're willing to spring for premium then there's definitely more to be had. I've been to lazy to buy a license for mine, but I did datalog it last Fall and saw some potential. Not a ton, seems GM decided to not leave it all on the table here.
 
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