do they learn new parts
13 January 2011, 08:47 AM
#1
do they learn new parts
Morning, right is it true that when u do a full ecu reset it has to learn all over again the cars fuel and air paramaters, if so why when a full de-cat is fitted do people say you need a remap @ how ever much they are,
i have a Z4 ecu will it learn the change of the system or not
Mark
i have a Z4 ecu will it learn the change of the system or not
Mark
13 January 2011, 09:13 AM
#2
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No, the things the car learns/can self correct are things like:
Idle speed control
Limited changes to Idle and cruise AFR - based on a working oxygen sensor.
Limited changes in ignition timing due to knock events
The car is not able to self-correct open loop AFR. which is also where you are most likely to cause damage if running with incorrect AFRs.
Idle speed control
Limited changes to Idle and cruise AFR - based on a working oxygen sensor.
Limited changes in ignition timing due to knock events
The car is not able to self-correct open loop AFR. which is also where you are most likely to cause damage if running with incorrect AFRs.
13 January 2011, 09:14 AM
#3
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Hmmm ok an easy way to explain this is.....
You have the alphabet, it goes from a-z, your ecu uses between e-h as its parameters, so on a daily basis it probably uses f-g with the e and h being the extremes of its map.
You replace a part and that now causes the car to run outside e-h, so its running d-i, now it can only correct between e-h, if your running d-i it cannot correct that and normally it goes bang, hence why you remap to suit the d-i parameters.
Will it learn? only its original parameters, as above if it exceeds those parameters....
Tony
You have the alphabet, it goes from a-z, your ecu uses between e-h as its parameters, so on a daily basis it probably uses f-g with the e and h being the extremes of its map.
You replace a part and that now causes the car to run outside e-h, so its running d-i, now it can only correct between e-h, if your running d-i it cannot correct that and normally it goes bang, hence why you remap to suit the d-i parameters.
Will it learn? only its original parameters, as above if it exceeds those parameters....
Tony
13 January 2011, 10:01 AM
#4
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Hmmm ok an easy way to explain this is.....
You have the alphabet, it goes from a-z, your ecu uses between e-h as its parameters, so on a daily basis it probably uses f-g with the e and h being the extremes of its map.
You replace a part and that now causes the car to run outside e-h, so its running d-i, now it can only correct between e-h, if your running d-i it cannot correct that and normally it goes bang, hence why you remap to suit the d-i parameters.
Will it learn? only its original parameters, as above if it exceeds those parameters....
Tony
You have the alphabet, it goes from a-z, your ecu uses between e-h as its parameters, so on a daily basis it probably uses f-g with the e and h being the extremes of its map.
You replace a part and that now causes the car to run outside e-h, so its running d-i, now it can only correct between e-h, if your running d-i it cannot correct that and normally it goes bang, hence why you remap to suit the d-i parameters.
Will it learn? only its original parameters, as above if it exceeds those parameters....
Tony
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