aFe Power Silver Bullet 46-37001 Honda Throttle Body Spacer In-house dyno testing resulted in max gains up to +10 HP and +8 lbs. x ft. of torque Precision machined from 6061-T6 billet aluminum Serrated/Helix Combination Design for optimum airflow into the combustion chamber Works with the OE.A slight modification is needed when usedwith Takeda intake system part number TM-1018P-X. This product is 50-state legal (CARB E.O Number D-550-11)