Riffraff high flow cvd fitting - Ford Powerstroke Diesel Forum
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Old 06-25-2014, 07:04 PM
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Riffraff high flow cvd fitting

Has anybody heard of the riffraff high flow cvd fitting? I just saw it there on the website. Seems like a quick, cool little mod to increase fuel flow. It replaces the stock check valve. Anybody have experience with this? And, where is the check valve I'd be removing? Just wondering how easy or difficult access may be. Usually they have pretty clear instructions on their website but, I didn't see any for this mod. - thanks!
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Old 01-13-2015, 09:20 AM
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Most people remove and drill out the fitting, this just basically costs you the extra 30$, but for the peace of mind you have a new fitting with no chance of shavings falling into the fuel rail. Not necessary but a nice touch if you have Stage II&III injectors.
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Old 01-13-2015, 06:04 PM
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they provide a little better throttle response. didn't notice much of anything else, but its nice knowing there is a little less restriction.

you don't have to drill out the stock fittings. you just take a snap ring out and the guts come out. but I like just buying new fittings that are ready to go.

use some locktite on the part that threads into the heads.

they aren't terribly difficult to install. the front fitting is more difficult. its easier if you take off the alternator and use along wrench and angle it just right.

then for the rear fitting reach under the turbo pedestal with a wrench to loosen the back fitting.
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Old 01-13-2015, 06:12 PM
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Yup, save your money. tiny little snap ring that holds the guts together. I have bunches of old ones laying in my fittings bin.
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