Stock downpipes extremely restrict exhaust flow due to the small diameter of pipe used. The abundance of sharp bends leading from the turbo to the rear end of the truck create back pressure throughout the exhaust system, suffocating your engine and robbing your truck of horsepower and gas mileage.
DieselPro's 4" and 5" exhaust systems are noticeably larger than stockexhaust. A more direct design from front to back increases ease of flow, opening up several additional cubic inches of breathing room to support the high volume of airflow diesel engines need for optimum performance. What is a Superchip?
A Superchip is a performance enhancing computer chip manufactured by Superchip, Inc. They have designed a small electronic module that mainly consists of a microchip, which stores a new program, improving your vehicle horsepower and torque. This fits into your stock computer, and not only increases horsepower and torque but also improves overall drive- ability.
Superchip, Inc. has spent over fifteen years researching different areas of your vehicles computer program. They have found a combination of changes that will not just give you a gain at full throttle, but throughout the entire power band and will make your vehicle a pleasure to drive. (Above Information provided by Superchip Inc.)

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