Nope, this means that the tunes are working. The operating parameters and maps that are changed in the tuning are going to make the engine more efficient but at the same time, just a little bit louder. It's the nature of the beast, Bob.
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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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