Quote:
Originally Posted by toyoyoyoyo86
How do you know when the car has finished learning the correct trims?
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It never actually "finishes" learning trims as this is the process the ECU uses to deal with variations.
To give an analogy:
Your friend moves house and you are going to visit for the first time.
He asks how long you will be - he wants the fried chicken he is making you to be nice and hot
.
You have never driven the route before so make a guess based on the distance (30 mins)
It takes you 45 mins to get there because of traffic, weather, etc.
Next time you drive there you tell him 45 mins - but it only takes you 35 mins. No traffic.
You've now been going there once a week for a year. You can pretty reliably estimate that it will take 32 mins in the dry and 44 mins in the wet. You can never be exactly precise because there are still variables (e.g. road works, slow grandpa, traffic light sequence), but you can give your friend a very good estimate.
9 times out of 10, dinner is nice and hot....you've "finished" learning your fuel trims.
General views seem to be that 100 miles of closed loop driving is a good start.....
Hopefully you will notice sharper throttle response, more power and better fuel mileage - although most of this will happen progressively