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Négative fuel trim

Hi! I m a bit confused, i got a too lean error code for bank 1 and bank 2 .when i look to the fuel trim i saw negative number

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		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain
Négative fuel trim

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07-16-2022, 12:33 PM	#1 (permalink)
Setluky Base Member Join Date: Sep 2021 Location: Quebec Posts: 2 Drives: 370z Rep Power: 4	Négative fuel trim Hi! I m a bit confused, i got a too lean error code for bank 1 and bank 2 .when i look to the fuel trim i saw negative number too get less fuel.which sensor tell what upstream and downstream someone say that it s too rich and the computer take off some fuel.why i get too lean code. I have installed berk resonated test pipe and custom dual 2.5 inches ss exhaust line what can i do to fix the code Thank you for your help

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