Quote Originally Posted by sparkydog View Post
Did I read your posts correctly that if I have an 01 GTP and want to try a used module first that I don't need to worry about the 5 rule thing? I just need to stay GTP to GTP?
In theory because your year model is compatible. But honestly man, I took an ebcm from the same year and model as my 03 and paid attention to the bosch serial number and a used one did not work for me. But I've heard of times when it does work, so if the cost of a used one is little to nothing I say go for it.

Hands down, www.modulemaster.com is the way to go though.