old fittings were difficult and I installed heat shields on both hoses , truck runs better and seems to have quicker acceleration and is definitely quieter, I also replaced the exhaust back flow sensor as it had 174000 miles on it and the hesitation and abrupt change to idle disappeared.

Love the product now that it's in. However, installation warning - the plug on the driver's side back is the easy one
The passenger side front - take your AC compressor loose first. There's exactly enough room to give you the hope that you can get the fitting in there - you can't.
Getting the fuel block installed is a trick, at least the springs are magnetic when you drop em behind the alternator. The gasket isn't. Took a while to find that one.
I'll let you know on improvement, had to do a new turbo after getting this and the HPx installed.... :/

Easy install stall and noticeable improvement in idle noise as well as throttle response. It gives you the feeling your truck has been misfiring this whole time and now it’s fixed.

Have been using Riff Raff products for over 20 years, great dependable service and products. The fuel Crossover rail is a great addition to my modifications for my 02 F350 Powerstroke, wish this would have been around years ago, easy install, follow the directions, smooth acceleration, very quiet in cab, feels like it complimented the other modifications with some more hintable hp, will need to see if there is any fuel mileage gains in the near future, but I am more for smiles than miles

Good folks at Riff Raff
Both 1/8 NPT adaptors required thread chasing as both would NOT thread into the fuel rail.
The thread simply would not catch!
This required taking a 1/8 npt die and running threads further there by having a taper on the adapter.
Easy fix but a bit annoying.
Thanks

Great product, customer service is also top notch. I would recommend this product and this company to anyone looking install on your 7.3. Thanks riffraff. Thank you, Clay!!

Have had on an 02 250 for about a year now with thousands of miles put on the FRx. I installed at the same time as my HPx and fuel feed lines from Riffraff so thought I would put the review on here since it is most common for people to do all three at the same time anyways. With both my idle was definitely quieted down and idle was cleaned up some from the cackle of the eighth injector. Cruising at 70 to 75 the truck is so much quieter. No need to turn the radio up to hear the music anymore and can have a conversation with someone in the back seat. Can even catch yourself getting up to 80 without realizing it that is how much smoother and quieter these two upgrades make the truck. The one thing that took some time was the feed line going to the passenger side head. I did not take the turbo out but believe it would have made inserting the line 100 times easier. But very doable with some patience and about 30 minutes. Overall the three upgrades are very much worth the time and money.

Quality part as all their stuff. Goes on easy enough and my idle is way quiter. A mixture of this and the banjo bolts and CVD fittings I can hear myself inside the cab now taking me a minute to get use to

Smoothed out my 7.3 and took the clank out of it. Better acceleration and quieter cruising at 70. 2002 F250