I added this to my 2007 Tahoe, which I had already upgraded with an Airaid 200-196 Cold Air Intake. Installation was simple, though the intructions are not the easiest to understand without comparing to the engine compartment several times (that could just be me, I tend to be very thorough). The combination of CAI and this spacer provide a noticable improvement - I no longer feel like the engine is just bareley making enough power to maintain speed. I rarely notice the additional noise, and even when I do hear it, it is not so bad that I regret installing the spacer. I consider this a worthwhile upgrade, though I am not sure I would do it without the CAI as well.