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us vs. jdm headers
what would be the best header to have. stock(jdm), dc 4-2-1(us or jdm)? i dont care about the weight difference, i just want the one that will produce the most power. a friend of mine told me the jdm header has a bigger collector, but i havent seen any places to get one from. the itr's are all over ebay, but i cant find any for the h22.
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