The tester is calibrated in air to read 2.0% so I figured the instructons in the box were out of date. I know this because the only thing the mini failed on was emissions and I had to get it fixed - and I wasn't paying somebody else to do it.Ĭross calibrating against the mot emissions machine I found that the tester reads 2.0% high. I bought one of these gas testers a few weeks ago and found that it is brilliant - except for one small point - it reads exactly 2.0% high !
