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Advanced Tuner
Fuel trims are in check but the car is still super rich
So just like the title says. Tuning in a LSA 408. The fuel trims are spot on but the exhaust fumes burn your eyes. I'm going to hook a wide band up to it to confirm. It is in a TBSS with new o2 sensors. If I confirm its rich what can I change to get the fuel trims back on track
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Do you have any exhaust leaks or misfires? Do you have a full exhaust system?
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Advanced Tuner
You have verified you are in closed loop?
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Senior Tuner
might need some eoit if the cam is letting some fuel out the exhaust valve, trims won't pick up on raw fuel as they only sense oxygen