Is it 4.3 CFM at 100 psi
or
4 CFM at 40 psi
Does not make sense?
The usual ratings is intake CFM (approx 14 psi) pumped against 90 psi. I found allot of 12v compressors are listing intake CFM against intake air pressure or atmospheric pressure which really does not measure anything. I assume this is the 6 CMF rating. So what is the real 90 psi CFM rating for this compressor?