The PCM with factory tuning only cares about the first 12.76 PSI anyway. That's why it doesn't care if you're at 18 PSI, 24 PSI, or 8000 PSI. It will fuel the same after 13 PSI. The only reason the truck does not fuel more than what you're already getting above 13 PSI is that the stock injectors are giving all the fuel they can.
One more thing, why does everything that's not stock have to be an "upgrade"? It's only an upgrade if it works better than stock and FEW things work better than stock. "Upgraded" compressor wheels that are actually a "downgrade" in most instances and "upgraded" intakes that DO NOT give your engine more than an stock intake and usually feed your engine WARMER air are more like "downgrades". Seriously.
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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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Sat, September 10th, 2011, 04:55 PM
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