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Old 03-06-2018, 03:30 PM   #1
NyC Zn6
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OEM Front pipe to 3' Greddy RS Catback Exhaust

What's up guys. I have searched the forums but i cannot find anything in regards to this. Has anyone mounted a 3 inch catback to the stock oem frontpipe? If so will this work http://www.grimmspeed.com/stock-dp-a...dapter-subaru/ . Thanks in advance
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Old 03-06-2018, 04:37 PM   #2
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I do not have the Greddy RS Cat back but I have the Greddy EVO GT cat back which is also the 3 inch. when I went to install it, it came with a 3inch gasket for the connection to the stock front pipe, so I simply removed the donut gasket from the front pipe and made sure the surface on the front pipe was smooth and then used the gasket with a little high temp RTV. I had absolutely no leaks at all I just made sure when I did it the first time the bolts they supplied were nice and tight. Hope this helps.
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Old 03-06-2018, 05:26 PM   #3
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Quote:
Originally Posted by NyC Zn6 View Post
What's up guys. I have searched the forums but i cannot find anything in regards to this. Has anyone mounted a 3 inch catback to the stock oem frontpipe? If so will this work http://www.grimmspeed.com/stock-dp-a...dapter-subaru/ . Thanks in advance


Ran the Tomei 80r in stock fp before no problems.


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Old 03-06-2018, 07:24 PM   #4
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Ran the Tomei 80r in stock fp before no problems.


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I have as well, so I can verify this.
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Old 03-11-2018, 12:58 PM   #5
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Originally Posted by NyC Zn6 View Post
What's up guys. I have searched the forums but i cannot find anything in regards to this. Has anyone mounted a 3 inch catback to the stock oem frontpipe? If so will this work http://www.grimmspeed.com/stock-dp-a...dapter-subaru/ . Thanks in advance
I had the GReddy Evo GT and used a flat ring gasket between the 2 instead of OEM donut. Beware, once you get UEL, you may drone and cold start will be loud as fuck
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Old 03-12-2018, 12:13 AM   #6
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I had to get new bolts and nuts for mine. The oem spring bolts wont go through.
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Old 03-12-2018, 10:53 AM   #7
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I had to get new bolts and nuts for mine. The oem spring bolts wont go through.
Would you happen to remember the sizes of the bolts you purchased?
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