Review on Airaid 400 633 PowerAid Throttle Spacer by Ben Balas

Installation of the throttle body gasket took less than 15 minutes. The instructions provided were detailed and accurate. It's always very helpful. At the same time I installed a K&N performance intake and am now enjoying the increase in low to midrange torque from the throttle body spacer and the increase in horsepower from the intake system. The increase in power is noticeable when I step on the pedal and let the engine rev over 4000 rpm. When the engine revs up, a deep guttural sound is heard. The increase in MPG is 2-3 at best.