Self-learning ability of the ECU?
Self-learning ability of the ECU?
Does anyone know anything about the self-learning ability of the ECU? I've read on some Japanese pages that the ECU has an ability to break in a new engine among some other things. Does anyone know anything about this? Is it just the 16-bit ECU or does the 8-bit also have this function?
Almost any modern ecu (the stock FD ecu included) has basic learning functions for idle and load conditions. I don't know if there any other functions that are "self-learning". What's the point of your question?
Originally Posted by Fatman0203
I would be its the 16 bit; and its also mainly cars with MAF sensors. Example the WRX can run alot higher than stock boost and still have no problems with the ECU throwing codes.
Originally Posted by BoostFrenzy
but anyone with a modified wrx and a factory ecu is just asking to pop ringlands with their careless mods CEL free heh 

Originally Posted by rynberg
Almost any modern ecu (the stock FD ecu included) has basic learning functions for idle and load conditions. I don't know if there any other functions that are "self-learning".
Originally Posted by rynberg
Almost any modern ecu (the stock FD ecu included) has basic learning functions for idle and load conditions. I don't know if there any other functions that are "self-learning". What's the point of your question?
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Originally Posted by jimlab
And they would be limited to the stock configuration at that. We (you) don't have a MAF-based system like the Supra where the ECU can compensate for major increases in air flow into the engine.
Originally Posted by daem0n
Well I've read that the self-learning ability of the ECU would allow a proper break-in of a rotary engine for 1500 kms...but this is in Japan. I just never heard of this feature before and I'm thinking if the ECU has that ability then it might have other things that we don't know about...
Originally Posted by rynberg
Right. I was only talking about idle and electrical load conditions, not adjusting for air flow differences.
Originally Posted by rynberg
I'm not following you, what do you mean by "allow a proper break-in"? Doesn't make any sense. Proper brake-in means no WOT and no over 4k rpm for the first 500 miles, plus what ever additional requirements your engine builder wants you to follow. I don't see what the ecu has to do with this.
the ecu does have a mileage switch that changes states at 20,000 miles. i have never heard a definitive anwser on it's function but it seems like it would be emmision related. not realy to break the car in.
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Sep 21, 2015 10:48 AM




