I have a lifted 2010 JK Rubicon 2-dr. I installed an Airraid Intake and Poweraid throttle body spacer. Also an MBRP cat back exhaust. I've had improvement in power and gas mileage. But I want better gas mileage. I've read all the reviews and it sounds perfect. But is it really with the $400? Any help would be really appreciated. Thanks.

(Has anyone used the new AEV programmer that is $150?)