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      06-25-2011, 06:27 PM   #1
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Drives: E90 M3
Join Date: Jun 2011
Location: Vegas

Posts: 35
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Smile Thinking to get exhaust with valve like IPE, etc

Hey guys, I am new to M3. Does any aftermarket system adds hp or tq? It seems like it's all for sound. How about IPE or akrapovic? Will I loose torque if I open the valves? Can't find any dyno for it.

Thank you
11 E90 MDCT, 09 Ferrari California
02 996C2, 06 Cayman S, 05 997C2, 07 997TT, 10 C63 SOLD!
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