Need a recomendation on what tunner to buy?
http://www.hptuners.com/order.php
info about both the standard & pro can be found here
http://www.hptuners.com/forum/showthread.php?t=2924
the link you posted is for efilive fwiw
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Again, read the stickies at the top of this section. Once you make your choice, you are stuck, unless you want to shell out more $$ for the other software. And yes, you will need a wideband O2 as well, an extra expense.
Best of luck, hope this helps.

