The ProLogger is a data logger that provides Wideband o2 tuning & calibration for electronic fuel injection EFI ECU & carburetor, turbo, nitrous, 02, analog, digital input & output with a meter, gauge, mapping, controller & fuel remapping for all your motorsports & high performance solutions. Took mine off my impulse Nytro and asking $250 for it. Comes with with everything you need. I was having problems on my last trip i was on with it reading my air fuel but i dont know if it was a bad ground or my O2 sensor. I will have it at haydays if anyone is interested. Give me a call at 605-212-8980.