View Single Post
Old 08-07-2014, 07:48 PM   #93
steve99
Banned
 
Join Date: Dec 2013
Drives: FT86
Location: Australia
Posts: 7,996
Thanks: 1,035
Thanked 4,998 Times in 2,985 Posts
Mentioned: 598 Post(s)
Quote:
Originally Posted by Silver Ignition View Post
so what is the ECU seeing/doing when I have changes to FLKC? Is there actual knock events happening or is FLKC adjusted to prevent knock?

same maps/settings as the last log, only this is a 3rd gear only, 2-7.6k pull
http://datazap.me/u/silver-ignition/...=0&data=1-4-12

As per @Kodename47 post above

also read link below its for WRX ECU but the process is same but IAM calculated different in BRZ/86 but it appears most of it applies to 86/BRZ

http://www.romraider.com/forum/topic1840.html

http://www.romraider.com/forum/topic5371.html



It appears the ECU applies the FLCK correction to the timing and also stores it in a fine learning knock correction table similar to below (this is WRX one. As Kodename47 says if the value in the learning table is negative the ECU will always be trying to "return " the timing if the next time it passes that rpm/load range it see no or less knock. This is why you sometimes see positive FLKC as the ECU "returns" timing previously pulled.

Thats the way I think it works anyway

steve99 is offline   Reply With Quote