The 05 WRX also has a single tip muffler and for some reason sounds a little better than the 9-2x... maybe it was just me, but I've heard my friend's 05 wrx and it sounded a little deeper than mine. He has no exhaust mods.

Also, 02-04 were dual.

So teh $150 I got quoted for a used STi exhaust is too much...??!?

I will be putting a Nino's Uppipe and Helix DP mated w/ my STi's OEM Catback Exhaust for the 92X.

If you all could wait for few more days, I can take side by side pics difference b/ 92X OEM Exhaust Vs. 04 STi's exhaust including the piping size

I'm very curious that Saab has utilized an '05 STi exhaust w/o STi stamp on 92X for the added look and slight performance.

Chairman Kaga wrote:

I wonder if the dealer techs would say anything abot installing an STi muffler, since it's "technically" OEM.

I would not think so.
It's probably an increase (if any) of 1-3 hp?

The dealer must proof that the aftermarket parts do damage before they can deny warranty.

Chad, thanks for your response, I really like the idea of both HP gain, albeit small, as well as a better exhaust note, as I thought the 9-2 was really quiet (I am picking it up next weekend), especially compared with my current vehicle. <don't get me wrong, I won't compare teh S4 vs the 9-2x, they're both VERY different vehicles.

What I appreciate here is the helpfulness and knowledge, I am new to the WRX/STi scene and want to do as much research as possible before jumping in/onto mods.

"Hmmm, maybe...
once you'll have it off, can you look for a part number? That way, we'll know for sure if it is the STI exhaust."

Absolutley not.  I've held the two exhuasts together side by side and can tell without out a doubt they are not the same.  The 05wrx uses a single tip now too.

Someone I know is thinking about selling his stock STi turbo-back. A worthwhile mod? No price yet as he's still on the fence. Any warranty concerns? It seems OEM STi parts should be kosher!

STi axle back is 2.25 vs 2 for wrx/9-2x.  I'm not sure about the size of the midpipe, though I think the STi is lacking a resonator that is present on the 9-2x/wrx.  As far as the downpipe and 2nd cat, there is no flow advantage to the STi unit, some have said that the dp cat on the STi is more robust to make up for the fact that there is no cat in the uppipe.  If you could only replace on part of your entire exhuast system, the uppipe would be the way to go.

As far as dealer concerns go, check with your service manager, mine was very cool, he's into racing and was very encouraging for me to mod the car.  Unlike subaru dealerships where everybody is modding it and SOA needs to take a hardline stance, Saab does not, I may be the only person or one of just a handful who mods a car from my dealership so the service manager has no prob taking car of it, as long as Im bringing him failed saab parts and not failed aftermarket parts.  That being said, I've only taken the car there for two oil changes and zero problems.

so if i purchased a sti catback it would not bolt on directly?  i know its not a useful upgrade but im kinda getting a deal on one. 

thanks.

hinduluv wrote:

so if i purchased a sti catback it would not bolt on directly?  i know its not a useful upgrade but im kinda getting a deal on one. 

thanks.

I installed an STi catback from MY05 STi onto MY04 Impreza Wagon and it was a direct bolt on.

I would assume the same with 92X as well = bolt on.

Wish I had my car with me as of this time.
The dealer's taking it so long to get it to me.

skipdup wrote:

What does MY05 stand for?  Is it Model Year?

- Skip

You betcha.