I just picked up my "EZ Flash" Map switcher from Gintani today! I can now go back and forth between two different tunes, simply by plugging it into the OBII port, truly groundbreaking stuff!
1. 91+meth tune
2. Race gas+meth tune.
I believe this is the first map switcher of it's kind for BMW's, I can also data log, personally I have been waiting for something like this for a long time!
I also had some colder spark plugs installed at Gintani, upon inspecting the stock plugs which have around 5K FI miles on them, they were in perfect condition.
Special thanks to JJ at Gintani for his hard work!