These AEM V2 intakes utilize a dual chamber (using two different diameters and lengths of piping) to create multiple frequency sound waves that help charge the cylinders with air throughout the entire rpm range. AEM has realized significant power gains—even over their original cold air induction systems—with the V2. They e confident that it is the most sophisticated power-producing air induction system on the market.Every AEM air induction system is individually tuned in length and diameter, and features the highest standards of construction—we even guarantee them for the life of your vehicle. Every AEM system is either C.A.R.B. exempt, or pending C.A.R.B. exemption (50-state legal).