Its a BS service, do not do it.
M3 engine is port injected, port injected engines do not have that much carbon build up especially at this miles.
2017 M2 - Scheduled European Delivery Date: 10/11/2016
2011 BMW M3 Sedan Alpine White
Picked up via ED 9/27/2011 & Redelivered 11/23/2011 **SOLD**