In high-compression diesel engines, excessive drive pressure can not only rob horsepower, but also be detrimental to engine components such as turbochargers, head gaskets, push rods, and many others.
The factory compound turbocharger system on the 6.4L Power Stroke is known to produce excessive back pressure even in stock form. This problem is often amplified with the addition of more fuel, injection timing, and especially nitrous oxide.
This is why H&S Motorsports has released the 6.4L Power Stroke Wastegate Kit. The kit is designed to bolt to the factory driver's side EGR feed pipe and vents excess drive pressure to the atmosphere via a short dump tube. On test vehicles with aggressive tuning, we have been able to virtually cut drive pressure in half. Your results may vary, but EGT temperatures and slight HP gains (5-10HP) are achievable with a correctly tuned wastegate.
Since each application will differ, wastegate regulator adjustments will be required for your particular vehicle.
This product WILL work in conjunction with the H&S Motorsports single turbo kit for the 6.4L, but will NOT use the provided wastegate location in the HSM case elbow. To utilize a wastegate in the HSM cast elbow, use the universal wastegate kit found HERE.