My 2 cents worth...
Overall, it is a good product. The pipe was a little thinner than I expected. Instructions could use some better pictures. Take your time and it's a cinch to install. Less than 1 hour for me. Turbo sounds better, just enough turbo whine without being obnoxious. Jury's still out on horsepower or miles per gallon improvements. Glad I did it!
2012 ram diesel
Install was easy if you've done it before. I left the top cover off to get more air but doing that makes the intake louder. Still testing the mpg gain but it's gone up 1 mpg so far in city driving. Overall I think it's a bit pricey for some plastic but then again I don't like stock intakes.