[JackyPerformance]

Since this is my first Subaru and Forester XT model car, do any of you know which other model subaru cars have compatible downpipes with the 2004 Forester XT models?

I need to know if an aftermarket downpipe for a 2002-2005 2006 IMPREZA SUBARU 04 WRX cars fits a 2004 Forester XT model while bolting to the stock midpipe / catback exhaust?

 

[Smooth]

Any 02-07 WRX or STi downpipe will fit. The turbo engines used in those models are very similar to the ones used in 04-08 Forester XTs.

 

[JackyPerformance]

Any 02-07 WRX or STi downpipe will fit. The turbo engines used in those models are very similar to the ones used in 04-08 Forester XTs.

Thanks Smooth, just what I needed to know! :biggrin:

 

[Smooth]

No problem! The only thing to watch out for is that most aftermarket downpipes have a flat flange instead of a donut gasket that will mate up nicely with the stock midpipe (Cobb downpipes are a notable exception). You can either have a new flange welded onto the midpipe, get an aftermarket midpipe, or use an adapter to get around this.

 

[JackyPerformance]

I wasn't aware of the donut flange adapter, thanks for warning me! . I was looking at getting this:

T-304 Downpipe Subaru Impreza WRX STi 02 03 04 05 06 07 : eBay Motors (item 230428594538 end time Feb-23-10 08:48:54 PST)

It has a flat flange, but do you know where I can get a cheap donut adapter that will allow me to mate this downpipe to my 2004 forester xt stock midpipe?

 

[Smooth]

I'm using one of these: 3" Downpipe Exhaust Adapter Converter (SUBARU IMPREZA) : eBay Motors (item 360099712224 end time Feb-11-10 17:19:52 PST)

Haven't had any problems with it.

Edit: also, you might consider going with a catted downpipe. I know catless are tempting because they're cheap, but man your exhaust can really get stinky without a cat in your DP (not to mention that in many areas it can get you a ticket).

 

[stan_t]

^^ +1, following a catless car in the twisties isn't fun :icon_biggrin:

They are louder, too. But, cheaper and probably yield more p0wah.

That ebay ad doesn't have a picture of the turbo side. Can't even tell if it's blank-plate, bellmouth or anything. I doubt much went into engineering of this thing, but who knows, it may work out okay. "3.0" inlet and 3.0" outlet" makes me think it's same blank-plate design as the stock pipe, meh.

Stan

 

[JackyPerformance]

that donut-to-flat-flange adapter definitely looks nice, but it costs more than the downpipe itself lol. I'm just looking for a temporary downpipe to test some tuning techniques during a long road trip. I can build a full exhaust system later to my specs, but for now I just want to find this forester's capabilities with basic flow improvements. Does anyone know of any cheaper adapter flanges for these downpipes by any chance? I appreciate your advice so far, it's helping me make an informed decision.

How about this?:

http://cgi.ebay.com/ebaymotors/ws/e...0&_trksid=m39&_nkw=160358166624&_fvi=1&_rdc=1

 

[Arthrogrian19]

that donut-to-flat-flange adapter definitely looks nice, but it costs more than the downpipe itself lol. I'm just looking for a temporary downpipe to test some tuning techniques during a long road trip.

You could do this, but what's the point? Why not buy a decent used catless downpipe for ~$150 and call it a day? If you want to be frugal and buy something new, check out the HKS 3" downpipe for $175. LINK

If you don't mind used, here's a great deal... http://forums.nasioc.com/forums/showthread.php?t=1924590&highlight=downpipe

 

[funkymonkey1002]

I'd just pickup something like a helix or similar cheap bellmouth downpipe. They usually run under 200$.

 

[si83]

will a 04 downpipe fits 09?

 

[pleiad7]

will a 04 downpipe fits 09?

I'm 99% sure you'll either need a '08'-'12 WRX/STI downpipe, or '05-'09 LGT will also fit.

 

[MrSerge]

Hi. On my downpipe is 2 cats. So what better to do fit STI downpipe with one cat or fully deCated down pipe?