EVE300-138 / 300-138 - Application Notes That reliable bolt-on horsepower is now available for the 2003 Chrysler Turbo PT Cruiser 2.4L 4 cylinder. This Quick Fit™ system was designed to use the factory lower air box and installs in just minutes. At the heart of the system is AIRAID’s Premium 4+1 SynthaFlow™ series High- Flow Filter that is protected from engine heat by our innovative Cool Air Dam (CAD) design. Independent Dyno tests show an increase of 6 HP and 16 ft/lb of torque. All these great features combined with our true “No-Hassle Warranty” continue to make AIRAID® Intake Systems the consumer’s choice.