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i was lookin at the Skunk2 exhaust for the new Si, and i was debating wether to get the 60mm one or the 70mm the 70mm says its made for cars with turbo, which i plan on getting eventually, but if i dont have a turbo will this exhaust still work or do i need to get the 60mm? and help would be appreciated

 
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u can get the 70mm no prob.,just call them and they tell ya,be ready for a pretty loud exhaust,its worth it.