I want to start doing some mods to my car but know if I get wild with a cam and headers I'll definately need a tune. I would like to get a tuning program that allows me to make modifications to the fuel and spark tables, but I would like to be able to use it as a diagnostic tool. It is my understanding LS1 edit is not a diagnostic tool however I was reading about Autotap EFI Live5.0 and it seems to be what I am looking for. I seem to remember reading about another tuning program on here that was being released earlier this month but can't seem to find anything about it now, and I dont remember the name. Could you please recommend a program to use.

Thanks
Josh