2003 Cobra Accufab Throttle Body & Power Inlet (NON POLISHED) The new Accufab Throttle Body and Power Inlet makes the 2003 Cobra really come alive. Dyno testing showed an increase of 10 horsepower by 2000 RPM, all the way up to 25 horsepower improvement at 6400 RPM. This is rear wheel horsepower. Torque also improved dramatically across the complete power range. The "Big Oval" Throttle Body moves almost 1700 CFM and the new Power Inlet straightens out the airflow, allowing for the major increase in performance. The kit is a direct bolt-on, no modifications are needed.