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Deeper Sounding Exhaust and No CIS

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Hey guys. I'm tired of my Magnaflow 18" muffler. It has a decent sound at low RPMs, but I cannot stand the CIS sound that it gets over 3500rpm. Are there any mufflers out there that won't have the CIS sound?

Someone in another thread recommended a Borla muffler, but whenever I go online to YouTube to listen to sound clips I feel like all I hear is rasp.

Would larger diameter pipes get rid of the CIS? And would it need to be larger diameter pipes before or after the muffler?

I'd really appreciate some help with this guys 'cause I'm rather clueless when it comes to exhausts. Thanks.
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