[chips1144]

I can tell you it wont be tiny, go to Sears, they usually have cfm rating printed on their compressors, infact Lowes and Home Depot do too, look at CFM @90psi. you could also contact Grex for a real answeron CFMs, Im sure that 2.2 figure has to be wrong. Dont forget you need to consider how much electricity it will need, you dont want to kick the breakers off.