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Power Strokes
7.3 Aftermarket
Tuning 101 - Thread Merged with Injector Posts
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[QUOTE="cleatus12r, post: 1317277, member: 18093"] It sucks, but it's the way it is. Just pick one of the ones I listed and go with it. We can ignore 95% of the others out there. [B][U] NO THEY'RE NOT![/U][/B] There is an issue. The 02 and 03 trucks use the PCM to control the voltage regulator on the alternator...there is no physical connection through a bulb filament like on the older trucks to "sense" vehicle voltage. This is why an 02-03 PCM will work on an older truck, but not vice-versa. Won't work. The memory/processor inside the PCM is programmed to read certain addressing and the TOAA5Z5 file you are using doesn't correlate with the VOAA7P6 you want to put on it. It's hardware, not calibration. International only used Ford EEC-IV (yes, 4) PCMS until 1997. Ford had to change something to keep the EPA happy. Even if there were ZERO changes to the calibration (which happened a lot). They also had to keep prying eyes out of the control side of things so changing addressing made it easy for Ford to keep hackers on their toes. The engine/transmission operation code is located in one bank of the programming. The rest is RAM/diagnostics/etc. "Bank 1" is the only thing we need. Besides, it doesn't matter if you're looking at a 32K, 48K, 224K, or 256K file.....the tuning software only modifies stuff that matters in Bank 1. [/QUOTE]
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