Not sure which 2006 Lexus IS 350 Air Intake Systems are right for you? We have over 54 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Conan L from Sacramento, CA said, "Everything you would hope for when purchasing an aftermarket intake system. Took about 30 minutes to install and adds a few good horses and torque on the bottom end, and amazing sound in the top end. I have it with an after market exhaust system so it worked out great for me. Recommended for all IS250/350 owners. Only downner would have to be the lack of an CARB OE number, other than that this product is great."