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Andy-J-Knight Andy-J-Knight is offline
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Car: Fk2 Civic Type R
Default Fuel trims - 01-11-2021, 04:03 PM

I noticed in all my logs that when under full throttle my fuel trims never go above 25. Reading the Honda sticky I assumed my trims should all be more than 25 (as 25 means no fuel change, 50 is +33% etc) as the ecu would need to add more fuel.

Am i misinterpreting this or is there an issue with the trims, scaling or something?

Example log attached.
Attached Files
File Type: csv P92_M2_R1_210104_075837.csv (12.0 KB, 189 views)

Honda Fk2 Civic Type R | JB4 | Injen Air Intake | Scorpion Exhaust | Shadow Chrome Rota PWR's | Insta: @andrewjonknight
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Join Date: Jan 2008
Default 01-11-2021, 06:14 PM

Fuel trims will hover around 25 (0%), may go as low as 0 and as high as 50, and be within normal tuning range. If it runs over 50 or under 0 then it could impact the tuning and should be evaluated.

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