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Discussion Starter #1
in a few days i wil be getting headers (obx) and the pipe diameter on these is 2 1/4 correct?, so i was wondering in a few mounts say at the latest a year i plan on putting a turbo in my car and i was wondering if i should put 2.5" piping and cat and exhaust and just have some kind of insert to raise up from 2 1/4 to 2.5" after the flex pipe? is this wise, cause i would hate to have to toss out the entire exhaust and since i'm gonna have t do the exhaust later on anyway?
 

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Discussion Starter #4
from what i hear on this site and from exhaust shops the best is 2.5", plus is it a good idea touse an adapter, wont make a difference.

plus the difference between the 1.8 and 2.0 are minute to say that i think.
 
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