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Old 03-22-2018, 02:29 PM   #1964
Scooby Specialist
Member#: 391748
Join Date: May 2014
Chapter/Region: NESIC
Location: The Shire
2015 WRX CWP (sold)
2019 STi CWP


Originally Posted by mr.nicknasty8 View Post
There is no night and day difference between open loop and closed loop if it's tuned properly.... It's the same... Closed loop is adjusting the fuel injection all the time to keep it on target. The reason why it is removing 10% is because of the O2 scaling. It's off from the factory... Notice on the Cobb map that the AFR reading from the O2 sensor is richer than target... The car is actually running target, but since it's in OL on the Cobb map, it's not going to correct it when the O2 is reading different than target. You can verify this by an actual wideband, which is what I did. It's also needed to get the correct scaling for the O2 sensor. I simply scaled the O2 to what the dyno was reading and it works perfect
This, this x100
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