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Old 01-07-2013, 11:15 PM   #1763
Scooby Specialist
Member#: 179846
Join Date: May 2008
Chapter/Region: NWIC
Location: Renton, WA
07 STi Limited
EFR 7670 TS

Default IAT how?

i cant figure out the IAT fuel trim system, when i drive in and park car seats for a bit IAT temps raise and AFR slowly goes lean 15.1 because IAT map removes -2 fuel. Should the IAT map be adding fuel instead?

Two systems fight with each other, IAT remove fuel, close loop adds fuel to get to target AFR which is 14.4
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Last edited by Bariga; 01-07-2013 at 11:53 PM.
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