Update on the tune...
Raced my wife in her 14 550xi and S-M-O-K-E-D HER...almost.
It was actually close as she was gaining since I blew her off the line. But the map my tech chose was the Transmission shift which very responsive! All in all with the "baby" stage 1 so far it's pretty darn impressive. I can't image Stage 2 with a bigger turbo, full FBO and E85, Meth, etc. I would probably end up in a tree.
I haven't dynoed it yet but the Sport display measured 380hp and 420tq so lets just say its better for sure.
