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Old Tue, January 27th, 2026, 02:20 PM
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F Your Yankee Blue Jeans
 
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There aren't any Hydraflash library calibrations specifically for eliminating backpressure valve deleted vehicles. If the check engine light is on just because it's unhappy about the backpressure valve solenoid being unplugged, places like RiffRaff Diesel sell a plug-and-play resistor that fools the diagnostic routine into thinking the valve is still there.

Deleting the valve has no impact on performance or tuning anyway.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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