what pic should i use?

[sirvo]

Decode what? The ELM327 does it all for you, spits out temperature, voltage, o2 sensor readings, etc. You have to do the research OBD-II and figure out what input values give you which output values. There's literally hundreds of them and I don't have the time to explain them here.

Hi. when I said "decode", i mean just what you said about what input values should i send to receive what i want. I have read a lot about obdII codes and i got nothing about iso 9141 protocol and what received "bytes" mean..

thanks skimask for helping...

Sylvio