Have you ever heard of VRP's ECU upgrade?
i believe VRP uses PowerChip (PC) tuning software
To the OP - AFAIK, you'd probably be the first on MBW to pursue VRP's tuning for a M156 tune. If it were me, I'd probably go with Kleemann for several reasons, not the least of which is that it's the same dough... but if you do go VRP, please dyno pre- and post-tune and share the results.



