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Hi, I currently have a cold air intake and an safc and everything else is stock. After the SAFC was installed, the gain was really noticeable, the gar is accelerating quickly under 3000 rpm. I'm looking to get more exhaust mods. I love the Greddy EVO's sound, but could I install a Greddy EVO and eventually take off the B pipe? (Is the B pipe the pipe between cat and axle? Will changing the B pipe to a wider pipe give me more gains? Because the Greddy sounds mean but low gain! I heard changing B pipe adds 10 hp? is that on top of whatever exhaust I will use?
 

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