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2008 Spec B -Invida Catback, OEM UP/DOWN-Wide O2 placement


phish27134

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I'd like to add an innovate WO2 sensor per their instructions, it needs to be post turbo before any cat at a length of 24in from the turbo due to heat? from the turbo, the OEM down has a (pre-cat?, if someone could provide me an understanding of why and what purpose it serves.

 

Irregardless, I've seen many invidia downpipes with an extra bung for the sensor right in the bellow just before the pipe reduces, usually on the high flow catted ones, I could careless about a cat.

 

I've read because of the way subaru routes their piping for the exhaust its cool enough temp wise to place the bung in the bellow.

 

Looking for suggestions, I've seen no name catless down pipes, but heard do not buy, is Megan Racing any good? I know the cat can be hollowed, but read it was unwise.

 

Any suggestions comments or criticism are welcome

 

On the innovate website is the manual, if anyone needs more clarification.

 

This is for tuning purposes so I'm going to post in there as well I apoligze if a copy in in a wrong thread.

 

-Thanks in advance

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