to the original poster just stay out of boost for the most part when running less than premium fuel,install a boost guage to see how much and where the boost start coming in.
do you want them looking yellow all the time or yellow when there on? If all the time then Lamin- X if only when on then yellow bulbs or h.i.d kit 3500k
Welcome man, you should've learned to drive on the Z3. It would've been so easy because the car torque, so coming up the clutch the vehicle would start moving fwd. Oh well you never to old to learn. Nice P5 hope she treat you well.