Great product. Easy install too! My truck is much smoother at idle and start ups now. And even smother acceleration. Thanks!

This product is well built, the only reason I gave it 4 instead of 5 stars is that I had to bend it to get it to line up with the JIC fittings. I have not noticed much difference in the way the truck runs or sounds, but I honestly haven't driven it much since. The idea of equalizing oil rail pressure makes a lot of sense, so I am happy with the part even if I don't notice a difference.

Glad I finally did this mod. Noticed a much better idle, and I can see it has smoothed out my ICP graph on my autoenginuity scanner as well.

Just installed the ss hpx line looks good works good no leaks. The only bad thing was the bend was not quite right took some words and a little bending to get the threads started. Other than that it's a good product so far.

Just put this on my 94.5 7.3. Idle was a lil smoother,althou it never has been real rough.Also seemed to have a little more "pep" in the throttle too,and seemed to be a little quieter @ highway speed. Fitment was good, a lil tweak to get it to line up just right with the passenger side,otherwise easy install.

Clay is the man!! I love riff raff you have one of the beSt diesel sites on the net hands down with top notch customer service. I ordered the hpx had a really rough idle for some reason (I have 3 7.3l and this truck I ordered it for is the roughest by far at idle it's straight ugly) install was pretty easy had to use a pry bar to help align the bar behind the "y" pipe, startup was instant, idle was significantly more quiet was actually amazed how much it smoothed the engine out. I struggled with the orings on the fittings I over tightened them. Had my 70 year old father call in, Clay answered immediately and helped him through everything and even sent out new oringz personally. So thanks for taking care of my pops and not up selling him. Truly can't speak highly enough of clay of riff raff or his products upstanding man and business.

~Nicholas

so I ordered this item to even out the idle and make my motor run quieter. I have heard it will help people with a weaker HPOP and not help people with a good HPOP. I fortunately have a strong HPOP and for $50 I figured I would see if it still helped. The crossover fit perfectly. I did NOT notice a quieter at idle or help with starting easier (already started amazingly well). However, I DID notice quieter highway RPMs. I am using edge insight to monitor the ICP and the HPX for sure keeps the spikes and dips in control and smooths the pressure out. Before the pressure would vary by 100-150 psi and now it only varies about 15-20 psi. I would buy it again.

Much better quality over any flex line. After some slight adjustment it worked out well. Starts much quicker and idle has smoothed out noticeably.

I will say the rr hpx crossover is a quality piece install was pretty straight forward
after install I noticed a very much improved idle smoother and it also seems to be a little quieter
definitely money well spent and there customer service is second to none