GM COLD AIR INTAKE:

[Johnny01]

Johnny01: you guy's that have installed this cold air intake, CAN you tell any difference in power?

 

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[newdude]

Try the 1/2 ton section as the GM intake does not fit HD trucks. 

[bersh]

I don't have one on my 2015, but I did install the GMPP CAI on my 2004 for a while. The only thing it did was add more intake noise, so it sounded faster, but other than that it didn't do anything. I ended up taking it off as it ended up causing a drone at highway speeds. It was a total waste of money, as are most of the systems, but it did look cool. Our trucks already have a CAI, and other than maybe flowing a bit better, the aftermarket systems are more for looks than anything. For those that modify the exhaust and do other mods, they may help, but you're better off spending the money on a diablew tune if you're looking for a performance boost.