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Old 05-29-2012, 07:47 AM   #1
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Default OEM ITR catback diameter?

Is the OEM ITR catback exhaust 2.25" or 2.5"?
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Old 05-29-2012, 10:40 AM   #2
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Default Re: OEM ITR catback diameter?

its 2.25 why didnt you ask me lol
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Old 05-29-2012, 08:11 PM   #3
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Default Re: OEM ITR catback diameter?

it's 2.25 OD and bottlenecks down to 2" OD where it meets the cat and just before the muffler.
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Old 05-29-2012, 09:07 PM   #4
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ghey ghey itr1334
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Old 05-30-2012, 10:46 AM   #5
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Default Re: OEM ITR catback diameter?

mine doesnt bottleneck right befor the muffler?
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Old 05-30-2012, 11:57 AM   #6
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Default Re: OEM ITR catback diameter?

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mine doesnt bottleneck right befor the muffler?
If it is OEM USDM, then it does.
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Old 05-30-2012, 04:12 PM   #7
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Default Re: OEM ITR catback diameter?

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mine doesnt bottleneck right befor the muffler?
All the jdm and usdm type r mufflers i've seen have a 2" bottleneck where the tubing enters the muffler. I even have a DC5 type r muffler in my garage and it does the same bottleneck before the muffler.
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Old 05-30-2012, 04:57 PM   #8
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Default Re: OEM ITR catback diameter?

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All the jdm and usdm type r mufflers i've seen have a 2" bottleneck where the tubing enters the muffler. I even have a DC5 type r muffler in my garage and it does the same bottleneck before the muffler.
nvm I looked at mine and it does sorry lol
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Old 05-31-2012, 08:54 AM   #9
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Default Re: OEM ITR catback diameter?

Are the complete catback USDM and JDM version the same?
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Old 05-31-2012, 09:25 PM   #10
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Default Re: OEM ITR catback diameter?

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Are the complete catback USDM and JDM version the same?
yeah they are the exact same.
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Old 06-01-2012, 06:49 AM   #11
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Default Re: OEM ITR catback diameter?

Thanks fellas!
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