I have done a lot of research on this topic, truely do the same, use the search function. Your code makes a huge difference in how much the chip does for your car. I was looking into them, but I decided to wait after looking through all the info I got for my particuliar code. Sometimes it is also a hit and miss thing. good luck and I hope this helps.
99 SVT Green/Tan #44
TH-Fix, Aussie Pipe, PRO-M, SHO-Shop Y, Borla, and other Misc.
93 Tracer LTS
Eibach, K&N, Misc (now my winter beater)
email me: keith@thinkingcapdesign.com
My Car:
http://www.thinkingcapdesign.com/KeithsSVT/