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I put this HPX on my 01 Excursion 7.3
It was an easy and straight forward install and the part fit perfectly! It quieted down the "cackle" a little bit. I haven't had any problems with it leaking or anything and I've had it on there for years now. This is another quality RDP part!

Did the trick for me! Curious to see if it helps with winter morning starts. For now I can say it smoothed out the idle and quieted things down a bit.

The HPX was super easy to install, just use a swivel socket and a extension and it is a 15 minute job. The HPX is not a miracle worker, but it did make my 180cc injectors less choppy and much smoother. It is definantly, no doubt quieter, but other than that there is no other benefits from this, it does everything it claims. Overall for 50$ this is a must for your truck.

Definitely an improvement

This made my cackle more or less injector cackle disapear. looks nice and clean installed.

Relatively easy to install. It's easier if you remove the intake spider. I went through a couple of O-rings when torqueing down to the provided specs. I emailed Riffraff and they sent me a 4 pack at no charge. Torqued it down just shy of the specs and no leaks! Awesome quality as usual from Riffraff. Super fast shipping too!

You would have to first excuse any and all offensive language to start but I have to say I have been ordering stuff for my 2001 Ford F-250 7.3 and I have to say with all of my kids I have that make it fast as hell already I have to say that the HPX is bad ass... like my truck is 90% quiter by far inside the cab and out just an amazing product y'all should give your self props.. I received it 06-19-2019 today and had it installed in no time and am super happy with the results. In fact my girlfriend asked me how my day went and when I asked about here I had to multi task and listen to her and in fact I was listening to the truck and pointing out to her how quiet it was... it's the small things that make me happy and she liked that I was happy and truly am amazed by this product.. I rate this a full on 10 and a part all 7.3's should have its a must.. awesome" and the stickers and magnets and the pen are another small thing that makes ya happy it's a lil extra gift.. thanks Guys.

Great quality and value. You will notice that your engine's injectors clater quiets down and a more stable idle.