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LLY: Critique this tune? Anyone?
Hi guys, I just bought a used LLY, my first Duramax. Its seems to make ok power but also seems like it has some "rattle" to it? Hoping one of the guys could take a look at his and give me some feedback? I had a buddy download the tune file for me, he said something like he was amazed it...- LLYCrewCab
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- Forum: EFILive