i have a 2005 civic and i''m looking for some ''good'' opensource obdII laptop software. i have made a ''jeff interface'' which is the optocoupler interface. the interface works and i have found a couple of pieces of software that work. i can read and clear codes, get some data but not all. the data that''s being gotten also seems to be off just a bit. for example the mph is off by 2 mph. the o2 sensor voltage also seems high @ .660v - .700v which is indicating a rich condition but no code is being thrown and my mpg is still good @ 36.5 mpg.

what i''m looking to get from software is the IPW and correct o2 sensor voltage for tuning purposes. i''d like to lean things out some more.

if anyone has any ideas of another, inexpensive way, to do this...please pass the info on or if you know of another ''free'' (opensource) software, for linux or windows, please pass that info on.

tia