I was just wondering if anybody has done this. I am getting a Cobb Catback, and am not quite ready to replace the downpipe and uppipe with something aftermarket and take the chance of voiding my warranty if I take it to the dealership.

I figure that a downpipe and uppipe off an STi would look stock enough that the dealer wouldn't notice, but I might get some added performance.

I know the STi uppipe is catless and I've heard that the STi downpipe has a high flow cat. Is this correct? Does anybody know? I can't find any info on the subject.

Also, what about fitment to the WRX. It would make sense that both would fit perfectly.

Any help is appreciated.

 

Yeah, I've read several places that the stock uppipe is catless, but I haven't heard anything positive about the downpipe.

I read in a couple posts that it is the exact same as the WRX, but I've also read that it has a high flow cat. Anybody know for sure?

Does anybody have an STi uppipe for sale?

 

yes the stock sti uppipe is catless it also dont have an egt bung so you either deal with the check engine light or i did the resistor fix

 

If you cant find a used STI upipe the cheapest I've seen it new was $275 here http://www.subaruwrxparts.com/wrx-drivetrain.html.