The head mechanic (20 years experience) is sure increased air flow is causing the car to run leaner than factory specs - it is running now with no issues on the stock CAI - and the AFE intake does allow more air due to size and the filter used - that is it's only purpose over stock - I will more than likely keep it and re-install in the spring - since it does give you slightly more HP and Torque - also I am installing a dinan mid pipe and a elite tune in the spring - like to get the car in the high 11 range. Just a fyi I was getting about 2 MPG more on the AFE intake -
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