Improve your throttle response with BDs large bulbous intake plenum which holds extra reserve air available to improve turbo response time on acceleration. The smooth radius turns reduces air flow turbulence. BDs unique design positions the fastening bolts outside of the intake (instead of through it) also reduce airflow turbulence. The improved turbo response time can be measured with HP when calculating time to speed. Two convenient ports (one pre - tapped) make it easy to monitor boost andor inject nitrous oxide or another power adder. Now available in both black powder coated and highly polished aluminum finishes. Use it with one of our X - Intake air systems for even greater airflow