These cold air intakes are not typical cold air intakes. They were designed with AEM's Electronically Tuned Intake (ETI) technology. These intakes were designed with AEM's ETI module which electronically adjusts the tC's MAF sensor to properly read air density. The result is an intake system that works with factory electronics and provides large horsepower and torque gains. For years AEM has been at the forefront of the Lexus aftermarket scene, making quality air intake systems for Lexus vehicles. AEM Lexus air intake systems offer increases in both horsepower and torque, as well as offer improvements in engine efficiency and fuel economy. Each AEM Lexus air intake system is designed vehicle specific, meaning it will bolt right into your Lexus , requiring no additional modifications or parts. You can install an AEM air intake system onto an Lexus that has never been modified without needing to do anything else. AEM Lexus Air Intake Systems also will NOT void your Lexus warranty when installed correctly. AEM makes air intake systems for cars, trucks and suvs. AEM air intake systems feature AEM DryFlow air filters that are maintenance free, requiring no oil! The AEM DryFlow air filter also is 99.52% efficient, exceeding the filtration rate of most of the competition and keeping your engine cleaner. Now that you know the facts about our AEM air intake systems, isn't it time to bring your Lexus up to its potential? If you're not using an AEM intake, your Lexus may be moving, but it could be moving faster. The part number for this item is 41-1402C and it fits 2006-2011 Lexus IS350 3.5 V6 models.