I've been trying to datalog the air charge temps with the SCT X4 and it supplies voltage reading and not actual temp like the IAT1 on the SCT X4. The Aeroforce gauge provides an aircharge temp, but the formula [ T=(V/0.1) converted from C to F ] I'm using in Live Link to convert X4 volts to temp provides a ridiculously low number, usually 10 to 15 degrees lower than what the Aeoroforce reads. Are there two different sensors providing data or is my formula just wrong? I've searched the net and the formula above is the only one I've found that works. It is my assumption that the MAP sensor at the back of the S/C on the drivers side is where this is measured.