Now that I think about it to Fluid Motorunion in Naperville has done a lot of dyno tuning and started out specializing in BMW's. They moved shops and I don't know if they still do dyno tuning but it might be another good one.
6inarowmakesitgo! said:
Make sure you use plenty of zddp with every oil change
Is this only necessary tell I reach 5 or 6,000 miles when I switch over to synthetic?