Installed easily, you will immediately notice a difference in the noise from the right bank. Even my wife was like What did you do, it's quieter? Money well spent.

Installed in 5 min. Some folks may have a rough idle after installing (air in the system) but my truck started right away after install and I noticed the smoother, quieter idle IMMEDIATELY. $50 and 5 minutes - absolutely worth it.

Read stories about the cross over not worth it. Installed it on my 2000 f350 and noticed the difference first time out. Truck idles smoother and is definitely quieter. Should have done sooner. Is not a waste of money or time

One of my most fav mods. made such a difference to in cab volume, and sounds smoother. completely recommend.

Should have done it a long time ago truck runs so much quieter

Did the install with 2 wrenches. Started right up and it was quieter. Inside the cab is where I and my family really can hear how nice and quite it is. Did the hpx about 2 weeks ago and I am very pleased. Also got rid of my surging and rough idle. Really smooth now. Thie hpx works

This is one of the most notable upgrades I have done since my dp-tuner, noticeably quiets the engine down, before install ICP pressure would fluctuate 50 to 100 psi; Now, ICP only fluctuates less than 10 psi!!!! Very happy with purchase, fit and finish are suburb and installation was a breeze.

Installed with 2 wrenches. Easy, fit perfectly. After install the truck started in about 4 seconds smoothed out right away. My idle prior to install surged and was a little rough all of the time. It is now smooth and no more surge, much more relaxing. Cab noise and vibration is down I can even hear my exhaust.

Did not install yet as I learned I already have a braided HPX on my truck.