Hi there,
BMW enthusiasts refer to individual models by their chassis code so that everyone knows what model is being discussed.
The 2006 3-series is an e90. You have asked your question in the e21/e30 part of the forum which is for questions about 3-series cars from the 1970's and 1980's.
The guys who know about e90's rarely take a look here, so you should re-submit your question in the correct forum
here.
Good luck, e90's are great cars!