There have been a couple folks who have looked into going with an actual 3 or 4 bar MAP sensor and then scaling the voltage-to-PSI functions in the PCM to accurately reflect actual boost above 25 PSI. However, that really would only come into play with stupid-huge injectors that need an accurate boost-to-fuel relationship for good driveability under low boost conditions and then accurately control mid-and high boost fueling as to not "choke out the fire". For stock-ish trucks that make less than 500 HP and have stock-ish turbo setups, the stock MAP sensor gets the job done.
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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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Thu, September 8th, 2011, 11:12 AM
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