Quote:
Originally Posted by Staples
That's absolutely correct... When you have cats and you're measuring air/fuel from the exhaust tip, more air then fuel is going to make it out of the car which is why the graph will read leaner because the tuner is compensating.
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Duh! Thanks for making me remember
. This is my first time having my car on the dyno since my turbo G35, which I'd only see the data logs from my Utec that measured the AF right at the catless downpipe.