I agree with clickwir... Either get the AEM CAI, or the new AEM V2 CAI... The original AEM CAI has definately been proven to offer the most gains in both Horsepower and torque. The new V2 However has shown that it offers even more. The fact remains however that not many people have them, so I honestly can't tell you whether or not what AEM claims is true. One thing is certain however... Either AEM CAI is the way to go for the best bang for the buck

~Peace