Street & Performance Street & Performance Helix...Dyno tested to produce up to 20 more horsepower and better mileage! Computer-designed chambers and special channels improve efficiency and air velocity performance Raises throttle body injection unit 1" Up to 22 more HP! Up to 25-ft./lbs. more torque!......
Street & Performance Street & Performance Helix...Dyno tested to produce up to 20 more horsepower and better mileage! Computer-designed chambers and special channels improve efficiency and air velocity performance Raises throttle body injection unit 1" Up to 22 more HP! Up to 25-ft./lbs. more torque!......