How does the stock cat affect wideband AFR readings?
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How does the stock cat affect wideband AFR readings?
Tomorrow, I am going to custom tune an Evo 8 on a mustang dyno using the zeitronix wideband. Usually I put the wideband in the stock rear O2 location. But I just remembered that the car will have the stock cat, so the AFR readings will be after the cat. How will this affect the AFR reading on the wideband?
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