Thanks for posting. I have to admit I misunderstood and thought you had converted an E93 into a dedicated track car. I will check out your blog about the work you have done to it.
Please ignore the negative remarks. I have yet to get my E90 on the track. I had a driving school scheduled but it was cancelled because too few people signed up. I have tracked before and can't wait to get my car out there. Most of the tracks in New England have very strict rules and won't let you track a vert without a roll bar. Most of the tracks around here don't have much run off room either.
Have fun and be safe out there!