Get one, smoother running, a little less knock and noise
ez to install too Riffraff is solid!

Easy to install, only took a few minutes, idles smoother and quieter

Definitely feel the difference in my trucks idle and throttle response. Much smoother and it quiet down my idle as well! Install was also a breeze!

Installation was easy. Really smoothed the motor out in my 97.

High quality part, fit up no problem .

Received this part as a Christmas gift. Wasn't sure if it would make a difference, but man I was wrong. After installing the HPX it increased my throttle response quite a bit on the low end and made the truck run smoother throughout the power band. Would highly recommend for any 7.3 owner. Also made a quick install video as well if anyone wants to check it out. https://www.youtube.com/watch?v=VZYItnqtk5U&t=13s

This product Quieted down my engine and improved my cold starts. However i had some trouble with the orings breaking due to myself not tightening the fitting all the way in. Make sure before you install you put some lube on those orings and drive the fitting slowly making sure you do not catch the oring on the edges and tighten until fully seated. Then install the line nut one by one making sure not to cross thread it. This product is worth the money.

This upgrade dropped right in. I didnt have to remove anything from the truck to install and it only took about 10 minutes.

Perfect fit. Well made. No leaks. Quiet down engine a little or aleast it idles smoother. Looking forward to get fuel crossover as well.