I'm working on this A4 Quattro and am looking for a generally agreed upon sea level spec for the MAF at idle and 2500 rpm with no load. The spec I have is 3.5 to 4.5 G/S at idle and 9 to 15 G/S at 2500. I have about 2.44 at idle and 6.47 at 2500. I've smoked t... Login to read more.