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RE: debaffling the stock pipes???
bighead said 2006-11-15 06:31
The stock pipes of the c90 have a catalytic converter on them and are split down the middle where they are routed into the converter and therefore, its much more complicated to get the hollowed out effect. I put some Hard Krome pipes on mine and it sounds great.i didnt even touch the fuel system and it runs great. may affect your milage though.