It had a useful feature called 'scope' where you could see traces of your sensors over the last 30s or so. I used it to detect issues with my O2 sensors and IACV.
------------------------------------------------------------------ 1992 300ZX NA 5 Sp (Dead) 1990 300ZX NA Auto 2+2 (Dead) 1990 300ZX TT 5 Sp (Building) 2004 G35 Sport 6MT (DD)