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New 2008 chevy avalanche 6.0 owner question

Dmartin411

New Member
Joined
Jul 13, 2018
Messages
8
O have had the truck for about a week and power is amazing. It has a gm cold air and cat back. Kinda think it is turned but have no clue. It does not have 4 cylinder delete but any way to tell if the program has been modded
 
Find someone with a Tech II, it can tell if it is a stock tune.

 
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