It is not difficult but it will cost you some $$$ for hardware and software.
-You'll need a chip burner. Moates.net sells chip burners that can only reprogram flash-memory PROMs. For the other types of chips (UV-erasable and single program EPROMs) I use a GQ-4X programmer.
-You'll either need a UV EPROM eraser (to erase the stock 27C256 EPROM chip used in the 7730 ECMs) or mem-cal adapter board so you can run a flash memory chip (like the AT29C256 or 27SF512).
-You'll need tuning software. TunerPro RT is a free download although they ask you for a donation to remove the nag screens. I prefer TunerCat myself but use both.
There's a lot of reading you'll need to do if you want to do your own tuning beyond just turning off codes and smog functions. Best places to start are below:
http://www.thirdgen.org/promintrohttp://para.noid.org/~lj/PC...rial/PCMtutorial.htmOf course, if you don't want to invest your money and time in doing it all yourself, there are people on here (myself and others) who can do your tuning via mail order.
-ryan
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OVERKILL IS UNDERRATED
Custom GM OBD1 & OBD2 Tuning | Engine Conversions & more | www.gmtuners.com[This message has been edited by Darth Fiero (edited 11-15-2013).]