Quality product, fit awesome. Definitely quieted down the motor and ICP smoothed out. Truck felt smoother through all regimes to. ATA boy riffraff!

Easy install made instant noticeable difference In way truck ran

great product I had no problems with it and easy to install.

This product did make a notable reduction in sound at idle and seemed like the truck didnt vibrate as much. Install was simple however I did it with the valley fully exposed, I would recommend at least taking the intake manifold off and using a line wrench. The fittings are well made and o-rings are the correct size, however a torque spec would be nice to have.

If you can do one improvement on your 7.3, this is it. Made a significant difference in engine clacking and smoothed out idle and running down the road. Simple install. Great product.

Fitament and function were excellant.

Highly recommend this product. its a cheap mod that definitely improves fuel mileage and a little bit of power. very satisfied!

Easy installation, i don't know why Ford didn't make this a factory item.

Quality of part was excellent. Installation was a breeze. Limited disassembly required to install the HPX. I didn't see significant difference in idle quality. Overall, I do believe this will benefit the performance of the engine. Would recommend to improve equality of engine ouling.