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      10-29-2012, 09:06 AM   #6
pbonsalb
Lieutenant Colonel
 
Drives: 08 E90 M3, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: Concord, NH

Posts: 1,610
iTrader: (3)

How legal does the legal have to be? M3DCTBT is in the Boston area and tunes. He says he can get about 425 rwhp (non dynojet) out of an M3 with 300 cell high flow cats plus other mods and pass plug in OBD2 inspection. I have not yet seen Dynojet results, but even 400 rwhp SAE dynojet through 300 cell cats would be pretty good.
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