cobramite wrote

I have installed a JB4 on an M50i but not on the 40i.
There are a number of installation videos on Youtube and there may be one for the X5 on Burger's site.
One suggestion I can make is to not run the OBD port connector cable through the firewall. Just run it around the drivers door pillar and up under dash to the OBD port which is very accesable.
Let us know how you like it after install.
I'm going to go with the JB4 on my M60i after I get about 3,000 miles on it.