Crawford Performance Billet Power Blocks 2017-2023 Impreza

Crawford Performance Billet Power Blocks 2017-2023 Impreza Adds 15 HP / 22 TQ - No Tune Required Improves Acceleration Decreases Delay between Shifts with AT Increases the Volumetric Efficiency of your Intake Manifold Maximizes the Potential of Aftermarket Intakes Installs in an three hours or less raises intake manifold by 1-13/16" inches Stealth Black now available! Naturally Aspirated (N/A) vehicles are starving for air without a turbo. Sure, an aftermarket Intake / Cold-Air Intake will bring more air in, but without a bigger volume in your intake manifold to receive the extra air, the air flow essentially gets choked before it has a chance to enter the engine. The Crawford Billet Power Blocks raise your intake manifold, lengthening the intake runners. This increases the volumetric efficiency of your manifold, which provides optimum airflow so that your engine receives as much air as your intake (OEM or aftermarket) can throw at it. Tested on and off our Dynapack