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

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.

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


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I have as well, so I can verify this.

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

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?