I was impressed on how it made my 7.3 more quite. Better MPG by one or two. I did this mod in conjunction with the banjo bolts. Make sure you get the Viton sleeves for the fuel lines.

I installed these fittings when I did my turbo upgrades so I can't say it did anything for power and throttle response but I can definitely tell a difference on how smooth and quite the injectors were! Side by side with the riff raff fittings vs the stockers you can see a huge difference. Don't forget the 1/4 in sleeves. Like all riff raff products it was nothing but the best quality!

I was really impressed of the difference of opening inside these fittings over the original ones, everyone should do that on their 7.3l, for the price you get these and how easy it is to do, I think there is no reason not to

I love RiffRaff products and these are awesome as far as fuel flow and non restrictive compared to the factory ones, couldn't be more satisfied.

These fittings were not to bad of an install. They flow a lot better than the stock ones. Make sure to buy new sleeves for these when installing them.

Works as it should..Most of the reviews had additional upgrades included in the review. I chose to only replace the Fuel Lines and CVD fittings. Smoothes out idle and saw 2-3 psi gain in Fuel Pressure..Went from 53psi stock to 57-58 psi. Less drop in pressure during full throttle.

When installing the driver side CVD, loosen the Alternator/Power Steering Assembly (4 bolts) to allow plenty of room to work. I'd also suggest removing the Fuel Bowl. (2 bolts) and plugs).

Make sure you order the Parker Viton O-Rings for the fuel bowl lines... 1/4, 5/16, and 3/8...Order spares..cause you'll likely drop them when trying to install. for $2..it's worth it!

I didn't have too take Y pipe and all the other stuff some videos showed have banks exhaust took down pipe off and had plenty of room to chang cvd and banjo bolt runs very smooth and noticeable sound diff in cab

Yet again, another great product from RDP! Added another element of quieting down the engine and improving fuel flow. Abandon the restrictive stockers for these and you will certainly hear a difference!

First off. This was a great product for my 2000 f350 7.3, with 440k. I paid for these fitings as I watched Bill at Powerstroke help do his fuel mods. The products that Riffraff sold and upgrading my old fuel system with the new improvemts really woke up my old 7.3.