I have not read anywhere that the throttle inlet presure (tip) sensor is not used with stage I and was wondering where you got this info? I also heard rumor that the down stream o2 sensor readings are not used. I have seen no confirmation of either of these rumors. I don't know of any scanner other than a DRB that can access these sensors to see if they function and if they function is the PCM using the info? [:I]
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