the N54 platform does exceptionally well with water meth injection. Whether you are just looking to cool your temps, replace race gas or make big power sooner or later you will want...actually NEED a meth kit. If you have a tune, you will never get the most out of it without a great meth kit and we have one designed for your vehicle.
Get a CMGS FS BMW kit and get a kit designed with your vehicle in mind. CMGS displays boost in real time so you will not have to get a boost gauge. If you have one, this will replace it making install easy.
See what CMGS-FS BMW is all about. No other mod will give you so much for so little.
http://www.coolingmist.com/detailmai...?pid=CMGSFSbmw