Stainless Steel HPX for Ford 7.3L 99-03
The Stainless Steel High Pressure Crossover is meant to allow excess oil pressure to flow between both heads allowing for better supply to the injectors. By allowing the oil the flow to the opposite head, the issue of pressure spikes are less.
HPx line comes with adapters, ready to install.
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Great
Loved it
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HPX Crossover rail
I got to say I was very skeptical of this part because I had a hard time believe something as simple as this I would see and hear a difference. It definitely quietened down the truck a little bit at idle (programmer makes it run around 750 rpm with current setting not a fan) but what impressed me most was the struggle to get up to the current fuel mileage was hard to do before adding this and now it gets there without issue. Went from 14.3 mpg hand calculated to 14.9 hand calculated while towing my bass boat. Without towing it was 14.6 mpg to 15.4 mpg for me that made biggest difference. Love the product and I will be buying much more from RIFFRAFF in the future as I go along with my truck build. Was bone dry stock before adding this and AIH Delete plug but it is a start and I'm happy with the results.
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Hpx crossover
Fits like a glove. Great materials, gonna last a long time.
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Good product
Easy to install and engine is alot smoother
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Hpx
Must have for any 7.3 Powerstroke!!!
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HPX crossover line
This is the easiest modification I have done. Engine is noticeably quieter. O-ring on one side ripped, but customer service/technical advisor cheerfully gave me the spec. to get replacement locally. But this mod is so easy, that replacing the o-ring was a snap.
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Hpx
Looks good and fits as it should
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Happy customer
Good product. Easy install and smooths out idle some.
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Install
The install was pretty simple
