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      10-26-2011, 06:19 AM   #2
markjord
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Drives: M3 E92 2007 Jerez Black
Join Date: Aug 2009
Location: Wellingborough

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I only have the Race with the rest of the exhaust being standard. So in this case the answer to q1 is yes, you need the connecting pipes in order to avoid any cutting and to make it easy to put the oem back on when you sell. The Race sounds terrific. Oh and you won't notice any HP gain with an axle back. Can't comment on the rest.