04-27-2017, 09:11 PM
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#1 (permalink)
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Track Member
Join Date: Dec 2009
Location: Farmington, Utah
Posts: 582
Drives: 14 SR 370z 6MT
Rep Power: 10140
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Quote:
Originally Posted by markesc
Doesn't the ECU track nearly everything anyways? I always thought it logged the number of full throttle applications + duration, or is that ONLY prior to crashing into a concrete barrier?
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The PCM is monitors all kinds of things while the engine is running and even when not running. Things like fuel rail pressure, engine coolant temperature, ect. For instance when a car over heats a DTC is set and the check engine light comes on. Then when I scan the vehicle, freeze frame data will also be present which shows me the temperature of the coolant.
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