I have a 2005 Ram 5.9 Cummins 48RE with automatic. I found it easy to install and seems to let in more air. I haven't noticed any louder noise from the turbo, if so then the difference is very small. The only problem I had and maybe I missed the instructions? I couldn't connect the rubber and tube to the turbine inlet in one piece (not enough clearance), I had to install the rubber and clamp to the turbine inlet first, and then insert the plastic tube and clamp there.
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