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Old 10-08-2009, 03:18 PM   #5 (permalink)
dcb
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Conceptually the difference between instant/current/tank is when they reset.

instant: every 1/2 second

current: when the engine is off and car is still for 7 minutes (or when you reset it manually)

tank: only when you reset it manually

It is worth noting that there are more computations in instant figures (i.e. time between vss pulses, rather than accumulated pulses over time) to try to get a more accurate figure in that 1/2 second.
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