Someone to Port

too bad someone couldn't port this http://www.obddiag.net/projects.html to arduino

What do you mean exactly?
You want to use that board for the USB to serial converter or you want to use that PIC in the Arduino environment?

I want to use the arduino to do the ODBII conversion. I would probably have to use soft serial or something like that for the ODBII interface and keep the USB/Serial for the computer or even if possible have a serial lcd that displays the dtc's and button programmed to clear the dtc's.

The creator of that does not seem to have released the source code to the pic software. I suspect the Arduino could easily be programmed to do the same thing.

Yeah I saw, the dev only had the .hex file up. Oh well, maybe when I'm done my other projects I'll take a serious stab at this.