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Hi, i just wanna ask you guys about air fuel ratio, i get 14:7 most of the time at wot probably 13 to 15, but then if i slow down n downshift my air fuel ration goes up to 29.
I have a basemap from hondata: Sri, cat delete, catback exhaust. My set up is n1 catback, takeda cai, rr motor mount.
 

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Normal.
When you are off the throttle, your fuel injectors are off so you will read max lean

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2015 Honda Civic Si Coupe
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I was pretty sure it was normal to happen.
 

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Hi, i just wanna ask you guys about air fuel ratio, i get 14:7 most of the time at wot probably 13 to 15, but then if i slow down n downshift my air fuel ration goes up to 29.
I have a basemap from hondata: Sri, cat delete, catback exhaust. My set up is n1 catback, takeda cai, rr motor mount.
You don't need fuel to decelerate.
 
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