Correct it measures the flow of air... and with a bigger intake you will get more air even though it is flowing at the same rate. Leaning you out! Not a big deal because I have a gm stg.2 kit which is aready really rich!

 

reguardless on the stage two tune you will have no trouble with running lean, ha

 

Haha not in the least, just as long as I'm not blowing codes I'm happy!