This is the deal: Stock Nitro headers are designed to be inexpensive, not efficient. They create backpressures that rob your engine of its natural power. Performance Dodge Nitro exhaust headers are mandrel bent so they allow exhaust gases to escape quickly and easily. Your engine doesn't have to waste critical energy pushing exhaust out the tubes. You're immediately rewarded with an impressive increase in horsepower and torque, not to mention the deep, low rumble of raw power. Also, your engine will run more efficiently and cooler, which is a good thing for the life of your car.