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      10-16-2011, 07:43 PM   #13
Lieutenant Colonel
Drives: 08 E90 M3, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: Concord, NH

Posts: 1,675
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I simply forgot to put them on my original list.

You will be spending a lot of money, so do some comparison shopping and find satisfied owners. The Vortech plus air/water concept is certainly good enough for others to be using similar setups. The tune will be the critical component.

In terms of popularity, ESS appears to have sold the most E9x M3 systems by a considerable margin.
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