hey guys, just wanted to add that I just looked into Neuspeed and they do not require you send them your ECU to fit their chip. They ask that you record the code indicated/shown on your ECU and send that code to them, so they can match your ECU application. I'd like to know which is the best chip for the money. I have a 1997 Passat GLX. What kind of horse power and mpg gain can I expect?