Cat-less up pipe?

**Cheets** · 02-05-2013 08:01 PM

I have a 2004 wrx wagon and am planning in replacing my up-pipe with a cat-less one. Am i going to run into problems getting it through emissions?

**UEDan** · 02-05-2013 08:13 PM

That cat is only used for startup emissions. An aftermarket uppipe will fail visual inspection but in such a pain in the ass place its doubtful it'll be noticed.

Posted from a fone.

**Cheets** · 02-05-2013 08:25 PM

also for headers, i have a buddy that has headers and an up-pipe from a newer wrx, could they possibly fit my 04 wagon?

**SD_GR** · 02-05-2013 08:30 PM

I don't see a point in headers.

**Cheets** · 02-05-2013 08:34 PM

i am getting them for super cheap as a group deal with an up-pipe I just want to make sure they will fit before i purchase them...

**SD_GR** · 02-05-2013 08:36 PM

Are they different to yours?! If they're not, it's pointless. If they are, you'll need a new tune for them I suspect.

**Cheets** · 02-05-2013 08:37 PM

they are just off a newer wrx. with the 2.5, where mine is the 2.0 i suspect they would be different. but i hear they will fit the 2.0 as well....

**SD_GR** · 02-05-2013 10:33 PM

I don't recall them being different but don't know for sure. Have a look I suppose.

**11blackwrx** · 02-05-2013 10:59 PM

from what ive found 02+ are all the same header

**Cheets** · 02-05-2013 11:06 PM

Ok, i got the header and up pipe for $20. They are just the stock ones off a 08 wrx, but it will replace the one i have so i can get that mescheivious cat out of there!

**EJ257** · 02-06-2013 03:38 AM

Originally Posted by 11blackwrx

from what ive found 02+ are all the same header

Not in stock form. '06/'07 WRX have different manifold and crosspipe. The flex section of the crosspipe would be touching your oil filter if you tried to use it on an '02-'05/'08+...

**SD_GR** · 02-06-2013 04:34 AM

Is this worth doing I wonder?

**EJ257** · 02-06-2013 05:38 AM

Originally Posted by SD_GR

Is this worth doing I wonder?

The uppipe, if he still has the stock catted uppipe, absolutely. The manifold, in OE form, absolutely not (it's the same piece).

The only benefit I see to this is that the OP would have a second manifold that he can PnP and sell off if/when he parts them out, while retaining a stock unit to put back on. Or he can sell them for some profit on someone who is looking for a set to return to stock on a part-out (maybe make $20-30).