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SC430 - 2nd Gen (2001-2010)

AFR bank1 sensor 1 running rich

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Old Jul 2, 2023 | 10:29 AM
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Firstlexy
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From: Ontario
Default AFR bank1 sensor 1 running rich

Hey everyone, so i have yet to swap out my b1s2 02 (AFR) sensor that threw a code a while back. I have the new sensor from Denso but...kinda loving the decel pops and even some gunshot pops while on the throttle. I have mini bullit mufflers where the resonators were and its open exhaust from there so it all sounds pretty wild. My scan tool shows up to 30% fuel is added on idle but when on the throttle the computer adjusts for the extra fuel and trims it back. Should I change the sensor? I understand that if always driven this way I can wash the cylinder walls and plug up my cats but do you think that because the fuel gets trimmed back to ratio when on the gas it should be OK to keep it like this?...SAY YES!!! Hahaha. What do you guys think?
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