Originally Posted by bmw5406spd
having issues wit my cluster after install, reset needles and still seems to be off, who else has used jb4 and what confif cluster setting are you using? 135 or 335?
also how do you hse the iso system, is it something you install on laptop and access the jb4 via usb cable...just trying to get all the settings correct...fuel gauge seems to be possibly off and speedo seems faster then it should?
How is the performance?? Notice the increases they are promising?