Dynomite's Dual Exhaust Thread
#577
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Join Date: Feb 2009
Location: Seattle
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W209, E46 M3 (dead), S54 swapped E46 Touring
You can start by reading through this thread again and doing some more research. Everything you need to know has been talked about in the W209 section multiple times including part numbers and exactly what other pieces you can use to complete your exhaust setup.