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2015 KIA optima lx
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221 Posts
Discussion Starter #1
I finally got my hks hi power muffler and I'm trying to figure out what pipe size to go with!! So quick advice would help I'm going in the morning to get it put on! Thanks in advance
 

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Super Moderator
2012 Kia Optima
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3,442 Posts
stock piping should be 2.25"
 
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