Performance Diesel Inc. is proud to introduce the latest in turbo technology! What if you could tune your turbo to fit your horsepower and driving style in a matter of minutes? PDI's patented nozzle ring technology provides you with the advantage because it is tune-able and it is the most efficient turbo on the market! By taking advantage of this patented nozzle ring technology, the Big Boss Turbo gives you the competitive edge with quicker throttle response and cooler exhaust temperatures. For more information about the new Big Boss Turbo, or for help with any of your performance needs, call PDI or visit us online at pdidiesel.com.