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OEM Piping Exhaust Size

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elmo-S15

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hi.. i have been searching through this forum but i havent found one. so better i post. what is the oem piping exhaust pipe from the converter to the catback? 2.5 or 2.75? :D
 

meddler

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will have a look for you later this morning.
 

meddler

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approx 2.25" outside diameter and 1.75" inside diameter. I measured this just after the joint behind the cat converter. It's quite small once you take off the heat shield.
 
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elmo-S15

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approx 2.25" outside diameter and 1.75" inside diameter. I measured this just after the joint behind the cat converter. It's quite small once you take off the heat shield.
owh thats quite small.. is that for the spec R? i thought the turbo car got a large pipe.. thanks
 

meddler

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yeah, that's a spec r. The pipe may get bigger later on, but that is just benhine the cat converter joint. The heat shielding makes he pipe look bigger.
 
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