[Nick7700]

Originally Posted by Logicoeur

It's viable if it's the first tune you use after a stock flash. To flash bm3 to MHD wouldn't work in theory because the tune you would be copying with MHD is already not a stock match.

So imo, those who have already flashed BM3, get a dealer flash. And if you still wish to have a tune switch to MHD if you can. If you are still stock go with MHD as your first pick, unless you want the BMW MPERFORMANCE tune and are willing to burn that cash. A bmw or Dinan DME tune would be th safest option outright because the dmv will know ita a valid tune from bmw.

That's good news!