Riffraff Diesel Technical Knowledge Center
7.3 Powerstroke HPOP Line Installation: Step By Step How To
Apr 17th 2026
Often missunderstood and done incorrectly, 7.3L HPOP line replacement is a simple job just about anyone can pull off in an hour or two. So let's get rid of the fear of the unknown that stops most of u
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KC300X G3 Stage 1 Turbo for 1999-2003 7.3 Powerstroke
Apr 17th 2026
If you’ve got a 1999-2003 7.3 Powerstroke and you want a true drop-in turbo upgrade that spools quick and supports real injector growth, the KC Turbo KC300X Gen 3 Stage 1 turbocharger is built f
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What Is It? - The PHP Hydra Flash Titan Tune Unlock for 7.3 Powerstroke
Apr 9th 2026
The PHP HydraFlash Titan Tune Unlock (PHP-TITAN) is the add-on for 7.3 owners running a Hydra Tuner with modified single-shot injectors. Modified single shot injectors take special tuning not offered
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Riffraff Diesel 6637 Dry Washable Filter: BHAF Airflow Without the “Low Filtration” Tradeoff
Apr 9th 2026
If you’re doing the classic 7.3 Powerstroke 6637/BHAF intake mod, the filter is the whole point: big surface area, less restriction, built for work. The 6637 style has lived forever in the heavy
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7.3 Powerstroke HPOP O-Ring Kit: Fix the Valley Leak the Smart Way
Apr 8th 2026
If you’ve got oil pooling in the 7.3 engine valley (under the fuel bowl/HPOP area), the HPOP is always on the suspect list—especially the rear/end plug and the high-pressure discharge fitt
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