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Message: [QUOTE="cowboy_dan, post: 89096, member: 258"] Will the 6.4 give some sort of an overboost code at some point? What I'm thinking of is something I've seen at work: -The controller measures the voltage from the sensor, and converts the voltage to a hexadecimal representation of the voltage. The controller uses this hex value for all the calculations and computations. -The controller converts the raw hex value to a different format for transmission to another device, and somewhere in the conversion the represented value is skewed. If you know at what pressure the CEL is supposed to come on and an overboost code be set, you can check pressurize the system slowly and see what pressure (via mechanical gauge) the code come up at. If it is supposed to come up at 62PSI and it does, but the Dash daq shows 58, then you can be pretty sure that the transmitted value is skewed, but the raw hex value in the controller is correct. If the code doesn't come up until 68PSI on the mechanical gauge, then you know the raw hex value is incorrect also, or Ford is using the converted value for setting codes. [/QUOTE]

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