Originally Posted by jose_sonictuning
You need the MT615 H8 module for E90 M3, if you purchase your MTEC with us.
Give us a call and we can do the exchange for you.
The instruction booklet is included with the unit.
Its plug and play, and fairly simple to install.
All orders shipped!
Should've read thanks Sonictuning, I'll drop by next Tuesday to switch them out.