Interesting you haven't coded on the GP's. How long have you had them in? Mine coded after about a month, and so did a friends. I have noticed some large margins on some lights--I suggest shopping around to be sure you're getting a good price.
400bhp! Milano/Saddle / Lux seating / camera / prem sound / sports pkg / convenience pkg / rear entertainment / heads-up display / iphone integration / 9.14 ED
Dropped in Munich on 9/18, Redelivered in Brunswick, GA on 10/12 by ELEKTRA. Delivered to my home on 11/2.