ECS still sells their boost vent gauge:
http://www.ecstuning.com/News/BMW_Ve...010_2011_2012/
-OR-
You can do the gage pod that mounts in place of your front ashtray.
IND sells complete setup with choice of gauges and a leather wrapped pod here:
http://www.m3post.com/forums/showthr...ferrerid=70505
-OR-
You can get 3D Design gage pod (Waaaaaay overpriced) & pick your own gages to populate. All the ashtray gage pods house (3) 52mm (2-1/16") gages:
http://www.pyspeed.com/3D-Design-Ash...-p/3d-3094.htm
-OR-
Macht Schnell gauge pod which is reasonable:
http://www.europeanautosource.com/pr...9x-3-series-m3
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