Quote:
Originally Posted by sachu
Is there anything wrong in going off only the base timing, leaving IAM at 1 but having Knock correction max A table be all 0 ??
Since there is no advance on the timing there should be no issue even if there is knock detected correct?
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If the Knock correction max A table values are zero then IAM will not be able to pull any timing in event of crappy fuel or some other issue causing knock.
you would only have flkc retard available about 5 degrees.
You cannot "leave the IAM at 1" the ecu software calculates when to reduce IAM, you cannot stop this unless your going to re-code the ecu software.
IAM can only retard timing if their are values in the knock correction max a table
I believe that the values are relivant to the rpm/load areas where knock is more prone on the engine ie the values are higher in arround 3000 as opposed to 7000 and probably a percentage of the overall timing, likely some engineer spent much time working these out so when the iam drops to say 0.5 the ecu pulls timing differently in different rpm/load ranges.
Engineers at subaru put that system in place and I would say they know far more about ecu's and knock than most especially on their engines.
The internal working of the ecu software are extremely complex and I don't claim to know anything more than the very basics
Yes you could do it but your effectively defeating one of the ECU's main safety features in relation to knock correction.
Some tuners smooth the values in the Knock correction max A table or the Base timing tables but have not seen any that remove knock correction values with these cars.
Apparently Group N Rally WRX STI ECU did remove knock control but not something you would want on a street car.
http://www.romraider.com/forum/topic360.html
What advantage do you see ?
maybe you should read up here
http://www.romraider.com/RomRaider/H...ndKnockControl
http://www.romraider.com/forum/viewt...hp?f=25&t=1840