Living With a 5 Inch Straight Pipe LLY Duramax Daily
If you're thinking about slapping a 5 inch straight pipe lly duramax on your truck, you already know the vibe you're after. There is just something about the LLY—produced between 2004.5 and 2006—that hits differently when you let it breathe. It's that specific era of GM diesel where the turbo whistle is incredibly pronounced, and the engine itself hasn't been completely muffled by the heavy emissions gear found on newer trucks. ...