Hey,
I have swapped my e34 with a m57d30(135kw) which was and auto gearbox in a e38. I have had a friend try to tune for drivability, tyrning off egr, abs, acs , can bus on the ecu disnce its not used. The car drives ok but it feels like I'm lacking power bayve its just me or it seems slow. The engine is all stock, it only produces somewhere around 1bar of boost. Im sure it can do more. Also he did a popcorn limiter which worked fine but after removing canbus it didnt work anymore.
Do check the file since my friend is not a proffesional tuner. I would be more than happy to recieve a more hp map, since I dont care about smoke all I need is more power.