2.5i Muffler Delete

[subiesailor]

These kids belong to our club - some of them have now crewed on boats and sailed more than halfway around the world simply by sticking their thumbs out for a ride.

wipeouts - YouTube

wipeouts - YouTube

[bradze]

i started autoxing a wrx, went nuts with parts. later when i found out about my condition, i panicked thinking id never be able to use a clutch again, so i got an evo and lapped every other weekend. i eventually made several connections, mostly from needing tires and brake parts, now im looking into pro3 bmw racing but thats on the back burner for a while. the funny thing is i'm making the same mistake with the outback that i did with the evo. i use it too hard for everyday use. at least the outback is a glutton for punishment like myself.

[dboz]

OP, you may want to try Vibrant Resonators. They will still allow good sound but will take out the drone that makes it uncomfortable. Try ebay or amazon for good prices.

[porschpow]

I am glad I found this thread. I am looking (without screwing up and voiding the warranty) to upgrade my exhaust to get that trademark subaru gurgle....Not anything crazy like the WRX. I am hesitant to do the muffler delete cuase NJ emissions are somethign else here, but has anybody been able to change mufflers to get that sound? What can a person do to get the subaru gurgle? I have a 2.5i Premium 6spd

[billybobbovine]

Only true way to get the turbo burb is to change headers. There is currently one set on the market that bolt up w/o any other mods. Rallisport racing makes them. There is a long lead on them, but they look like a high quality piece. You would also have to change out a muffler or 2 downstream of the headers to get it a bit louder.

[porschpow]

So in order to have that sound I need to order the headers and change the muffler? what do you mean by 2 downstream??

Also, will you void any warranty? Will you get better performance? Would you have to change anythign on your Computer?

[billybobbovine]

at least my car, which is aPZEV too, has the back can and then at least 1 mid-pipe resonator/muffler. Removing the back can really doesn't open up much volume surprisingly (its easy to do if you want to hear, its 2 bolts, dont need to lift the car or anything, 10 min max on and off).

As for voiding warranty, dealers cant void a warranty outright, but they can deny service if they feel that your modification caused the issue. the new headers do replace the cat as it is integral with the headers, so if you had an emissions system fault, then yeah they probs wont pay for it. If you change it out and your shocks blow early, well they arent even related so that doesnt affect it. Each part has its own warranty and different systems do not affect one another.

Better performance is unlikely. Subaru went to an EL design because it is supposedly more efficient. That being said, the guy who makes the UEL also makes no claims of improved performance, but he also claims that there is no decrease and that seems to be the consensus on other forums.

As for computer changes, you cant make any on our ECU anyways as 1) no one makes a tune and 2) I am pretty sure it is a locked ECU. Some people are getting CEL's with these due to the higher flow cats and the O2 sensors not liking it. Seems to happen in colder weather, and seems to be mitigated somewhat by taking the ceramic coatings he has.

Google rallisport racing UEL headers. There is a large thread on the impreza forum that talks about them.

[porschpow]

Originally Posted by billybobbovine

at least my car, which is aPZEV too, has the back can and then at least 1 mid-pipe resonator/muffler. Removing the back can really doesn't open up much volume surprisingly (its easy to do if you want to hear, its 2 bolts, dont need to lift the car or anything, 10 min max on and off).

That would be something worth doing, but people probably have said hear it sounds more like a ricer.

Originally Posted by billybobbovine

As for voiding warranty, dealers cant void a warranty outright, but they can deny service if they feel that your modification caused the issue. the new headers do replace the cat as it is integral with the headers, so if you had an emissions system fault, then yeah they probs wont pay for it. If you change it out and your shocks blow early, well they arent even related so that doesnt affect it. Each part has its own warranty and different systems do not affect one another.

I would have to call someone (don't know who) to see if I cna pass emissions. I understand about the shock thing but this changin of headers I take it is frowned upon from the dealers?

Originally Posted by billybobbovine

Better performance is unlikely. Subaru went to an EL design because it is supposedly more efficient. That being said, the guy who makes the UEL also makes no claims of improved performance, but he also claims that there is no decrease and that seems to be the consensus on other forums.

Efficient being more gas efficient? So what other benefits are there other than getting the WRX/STI sound out of these headers

Originally Posted by billybobbovine

As for computer changes, you cant make any on our ECU anyways as 1) no one makes a tune and 2) I am pretty sure it is a locked ECU. Some people are getting CEL's with these due to the higher flow cats and the O2 sensors not liking it. Seems to happen in colder weather, and seems to be mitigated somewhat by taking the ceramic coatings he has.

What are CEL's?
So the fix to the computer issues (or the O2 sensors faulting is to get ceramic coated catalyytic converters?
So, the computer will know that you basically put on the new headers, eh? The car would rat you out to the dealer?

Originally Posted by billybobbovine

Google rallisport racing UEL headers. There is a large thread on the impreza forum that talks about them.

So this is what your talking about?
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Actually looks like something I can do myself, eh?