One of my sons is LS3 swapping an E92 M3. I've been asking questions that haven't gotten many answers. He is going to be using a Holley system, and I know that Holley has a BMW Canbus module. Is anyone aware of threads where someone has documented a really clean install, electronics-wise? By that I mean that everything works, and modules are not left in the car because the conversion couldn't be figured out. Thanks!