Not sure which 2008 Cadillac CTS Air Intake Systems are right for you? We have over 388 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Byron G from Greenville, NC said, "I wanted to get an air filter that I would never have to replace. Once I saw this AirCharger, I knew I had to have it. The installation was not too bad, it does take about 90 minutes and maybe a little longer if you do not know what you are doing. (That would be me) It looks great with the engine, sounds great and I do get more power and a little better gas mileage. I highly recommend this product."