The tune alone is really good, I had a different brand and found it really improved lower RPM.
After a long wait for the upgraded Gintani supercharger kit, my car will be going under the knife tomorrow. Should be good! Will get the slicks on and get it out to the track next week too, then Jayde's coming up to detail it.
I just can't see myself getting rid of the M3 anytime soon. It's my 6th BMW and I still love it!! Except the noise