I am ready to install a S-AFC and I already know the best way to get results is a dyno. So here's the question. I have an AEM intake and was wondering if the intake would cause the motor to run lean or rich?

I will be running off the O2 voltage to try and get it close than some time in the spring or summer try and get it dyno tuned, just looking for some base numbers here. I have alrady looked at the AFC setting thread and doesn't really answer any of my questions.

Any general knowledge would be greatful. TIA

 

Aftermarket intakes cause some spots on the powerband to be lean. I've found that some spots between 3000-4200 tend to run lean with aftermarket intakes. Every car is different, though.