Thread: Why cold start?
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Old 07-11-2022, 02:01 PM   #14
tomm.brz
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Quote:
Originally Posted by Compelica View Post
Slightly related - is there a learning component for the ECU when starting the engine? Starting the engine after the first flash always requires more cranks as compared to a car driven for a while.

That s not always true
cold start is a open loop moment, so it depends on how the tune is set
Also, after a reflash, vvt is always off, compared to after a while, when vvt is most of the time already on almost immediately


but, yes. there is some kind of fuel trim that is learnt and then set also during cold start
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