Has anybody had any experience with or stories about the FAST digital AFR meters ? They have a dual sensor one for a coupla hundred bucks less than the Innovate LM2. I received a dongle the other day for Scan5mx , but there is a dodgy connection in the 16 pin end of the 3 pin to 16 pin cable so it only works when vertical....I wanted to put it in the cavity under my LiFePo battery/