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Old 09-25-2013, 07:05 PM   #401
bradze
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the muffler delete sounds awesome. any downsides to just welding on a straight pipe?
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Old 09-25-2013, 08:41 PM   #402
averagewhiteboy
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I would have to imagine back pressure..
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Old 09-25-2013, 09:21 PM   #403
VegasSubie
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So I went to a shop to get a quote on an axle back exhaust. Including a nice muffler, around $200-300. We had my car up on a lift and it starts with a restrictive exhaust manifold, a catalytic converter, 2 inch pipe to another catalytic converter, 2.5 inch pipe to a resonator, 2 inch pipe back to the muffler, then 2.5 inch tip. They suggested just removing the factory exhaust behind the first cat (no sensor on the 2nd cat or behind that we could see), and doing a full 2.5 inch exhaust back to a muffler. Including a nice APEXi WorldSport muffler and full mandrel bent stainless steel 2.5 inch pipe, they estimated around $800.

I'm planning on taking my car to a dyno to get some accurate numbers first. Then probably going for the full custom exhaust. And then getting some updated numbers to see if I get any power gains. The exhaust shop said that if there's interest in the full set-up that they could make some more and sell them and cut me in on the profit.

Wondering what everyone thinks about the whole set-up. Does anyone think it will produce extra power? Is it worth the $800? Would anyone want to buy something like that?
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Old 09-25-2013, 10:20 PM   #404
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I don't foresee any epic gains. That being said, you'd be one of the firsts with a full system. And probably THE first with a full system on a sedan (which is what I believe you have). As for it being worth it, that's up to you. But definitely keep us updated.
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Old 09-25-2013, 11:56 PM   #405
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I'd honestly be happy with around a 10 horse power gain. They're trying to talk me into making the first aftermarket intake for the 2.0i too. I'm pretty sure I'm going to go through with it. I got a $7700 bonus from the Air Force so I might as well enjoy it.
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Old 09-26-2013, 01:12 AM   #406
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Might as well. haha

But no, that's probably about right. This exhaust seems crazy restrictive. I'd be happy with a little more tone, and a hair more pep.
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Old 09-26-2013, 02:55 AM   #407
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For $800 might as well buy a exhaust system and make it work. Buy a tsudo exhaust and move the hangers. Tiny bit less expensive but more realistic because of exhaust system.



Wrx with pro tune might see 10hp. Do u have a Turbo?nope. So u won't see it, unless u do headers. Then between both u might see that.
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Old 09-26-2013, 03:54 AM   #408
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Hey all, after reading through all 17ish pages I hope I don't complicate things, but over the past few months I've spotted a black 2012+ Impreza hatch in SD. I've spotted it twice throughout the city, but I know it's the same one because of the exhaust. Whoever owns it has modified it such that it has a twin exhaust coming out of the middle of the rear bumper, similar to a Cooper S. But they're pretty wide pipes, maybe 3-3.5" single walled. The car sounds utterly boss, and I'm wondering if anyone knows of what kind of exhaust it is, or where you can get it. My girlfriend might be picking up an Impreza soon and this would be a spectacular mod. Also, the rear bumper has a cutout similar to the Cooper S. Both times it caught me off guard and was too fast for me to whip out my phone and snag a picture. Has anyone heard of this?
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Old 09-26-2013, 12:55 PM   #409
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Quote:
Originally Posted by VegasSubie View Post
I'd honestly be happy with around a 10 horse power gain. They're trying to talk me into making the first aftermarket intake for the 2.0i too. I'm pretty sure I'm going to go through with it. I got a $7700 bonus from the Air Force so I might as well enjoy it.
you could get a decent bugeye wrx for that $7700. dont waste too much of it on your gas sipper unless you can add a few zeros to the amount you're getting. i know i want to change mine, but for a whole lot less. that $800 for an exhaust just seems pretty expensive for a very marginal gain.
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Old 09-26-2013, 01:40 PM   #410
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Okay, so I got a Magnaflow muffler installed today at a muffler shop here in Oregon. Cost me $289 out the door installed and welded on. Not amazing, but I can live with it. We went with the Magnaflow 11235 instead of the 11236 as it was easier to weld up the 2.25" exhaust and I wasn't opposed to the idea anyways as I wasn't looking for a really loud exhaust anyways. All of my exhaust searches usually include the word "stealth", not that there is anything to find for this ride.

So far... initial reviews... still really damn quiet. You get almost no additional noticeable rumble inside the car, and outside the car it's at most 3db louder. It went from a whisper to a soft conversation. Get on it with the windows down and you can hear it decently (5db?) and it's nice but still somewhat understated compared to other exhaust samples I've heard on here. With the windows up you can't tell the difference other than briefly taking off from stop where the engine noise overcomes the perceived exhaust noise inside the cabin.

I'm betting the average person would find going with the 11235 exhaust too insignificant to bother with, borderline a waste of money. If you're concerned about keeping the cabin noise low so as you can use the bluetooth with ease and what not (I was) it's good. If you want more engine noise for better driving, it gives you just enough to do make it work but not slap in the face obvious. If you want to start your car in the morning and let it warm up without pissing off your neighbors, it'll do that too. If you want to feel like you're in a WRX, you definitely won't even be in the same ballpark.

I'll try and get an audio sample and provide more than an initial review as time passes.
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Old 09-26-2013, 01:45 PM   #411
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Quote:
Originally Posted by bradze View Post
you could get a decent bugeye wrx for that $7700. dont waste too much of it on your gas sipper unless you can add a few zeros to the amount you're getting. i know i want to change mine, but for a whole lot less. that $800 for an exhaust just seems pretty expensive for a very marginal gain.
Unfortunately I can't spend all of that money on my car. And I bought the new Impreza to get better gas mileage and to have a car with a warranty. I have a couple other cars I'm trying to sell that I might buy an older WRX with the money.
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Old 09-26-2013, 02:51 PM   #412
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Standing by for RalliSport's offering.
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Old 09-26-2013, 03:50 PM   #413
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Gonna try to stop by Moore and get their axleback within the next few weeks..
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Old 09-28-2013, 02:12 AM   #414
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Guys. I was slow at work tonight and watched several exhaust clips for our cars. Probably every one on YouTube. The Magnaflow setup sounds good, but at ~300, I'd probably rather get the Moore axleback. Now, I saw several videos where guys ran no mufflers at all. They actually sounded great, as long as the resonator was still on. My question is what did you guys do exactly who are running no muffler? Did you simply run a straight pipe for the axleback portion, or run something like a glasspack in place? From what I hear, it's basically what I want. But you can only tell so much from lacking audio clips.. It's basically the sound I want, at $300 less. lol My other concern is if there's any CEL's, or lack of power? CEL's are self explanatory, but I'd assume there could be a tiny loss of power or responsiveness due to less back-pressure. Anyone care to chime in on this? Also, for anyone who is muffler-less but retained the resonator, how's interior noise/drone? If it all checks out, I know people that could hook me up. Thanks!
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Old 09-28-2013, 01:19 PM   #415
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Said screw it and joined the no muffler squad. Car is on the lift as we speak.
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Old 09-28-2013, 02:24 PM   #416
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Quote:
Originally Posted by averagewhiteboy View Post
Guys. I was slow at work tonight and watched several exhaust clips for our cars. Probably every one on YouTube. The Magnaflow setup sounds good, but at ~300, I'd probably rather get the Moore axleback. Now, I saw several videos where guys ran no mufflers at all. They actually sounded great, as long as the resonator was still on. My question is what did you guys do exactly who are running no muffler? Did you simply run a straight pipe for the axleback portion, or run something like a glasspack in place? From what I hear, it's basically what I want. But you can only tell so much from lacking audio clips.. It's basically the sound I want, at $300 less. lol My other concern is if there's any CEL's, or lack of power? CEL's are self explanatory, but I'd assume there could be a tiny loss of power or responsiveness due to less back-pressure. Anyone care to chime in on this? Also, for anyone who is muffler-less but retained the resonator, how's interior noise/drone? If it all checks out, I know people that could hook me up. Thanks!
Past experience with a scion xb 1st Gen. After removing cat and resonator & bigger pipes, 0-60 felt more responsive but after 85mph no more power for passing. And hitting 100mph was difficult. With OEM Exhaust I could do 110mph because of the back pressure I guess. Cel did came on and off.
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Old 09-28-2013, 04:25 PM   #417
averagewhiteboy
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Well, after the first couple hours, I like it. Just used the stock axleback, hacked the muffler off, cut right before where the bend starts, then turned it down and re-welded. Then sprayed it to prevent rusting. The idle is great, low RPM is great. Higher RPM is a hair louder, but overall worth it. No major difference in powerband, but possibly a hair more responsive surprisingly. Stock muffler is surprisingly large. This is on a wagon by the way.. Hopped on the highway for a bit, did some around town, and had the car off and on a few times. Thus far, no CEL's or other oddities. I will still get the Moore axleback come Spring, but this is a very good temporary solution. Even with the CVT, it's not annoying. Some UEL headers would be mint on this car. Also, with the rest of the system being stock, there's no annoying highway drone either, windows up or down. So far, so good.
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Old 09-28-2013, 04:27 PM   #418
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Forgot to put in that the car loudness-wise fits somewhere between a stock WRX (without turbo sound) and an old Subaru 2.5 with a worn muffler. haha If that makes any sense.
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Old 09-30-2013, 09:41 PM   #419
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Quote:
Originally Posted by averagewhiteboy View Post
Well, after the first couple hours, I like it. Just used the stock axleback, hacked the muffler off, cut right before where the bend starts, then turned it down and re-welded. Then sprayed it to prevent rusting. The idle is great, low RPM is great. Higher RPM is a hair louder, but overall worth it. No major difference in powerband, but possibly a hair more responsive surprisingly. Stock muffler is surprisingly large. This is on a wagon by the way.. Hopped on the highway for a bit, did some around town, and had the car off and on a few times. Thus far, no CEL's or other oddities. I will still get the Moore axleback come Spring, but this is a very good temporary solution. Even with the CVT, it's not annoying. Some UEL headers would be mint on this car. Also, with the rest of the system being stock, there's no annoying highway drone either, windows up or down. So far, so good.
If you think the stock mufflers on our Imprezas are big then you should check out the stock mufflers from hatch wrx '11 onwards, its the double the size of ours lol
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Old 09-30-2013, 10:15 PM   #420
averagewhiteboy
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The stock muffler on my Cobalt SS was also big, but not oval shaped. It kinda looked like a giant state of Texas. lol
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Old 10-23-2013, 05:06 PM   #421
shredjesse
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Long term report on the Magnaflow P11235, the 2.25" muffler. Drove it accross the country to move back to Boston, and have about 5k miles on this muffler now.

Overall opinion: Meh, probably don't bother.

It makes the car a bit louder and has a good rumble at 2k, but quickly matches in volume to engine noise at 4k. It's quiet as hell at idle.

I wanted something stealth, but this is not quite stealth. This is what the stock volume probably should have been... but instead they went whisper quiet.

If I could do it again, I'd ensure I went with the P11236 (Like I ordered and they suggested otherwise) or do the no muffler delete.

MPG still hits 31mpg at best, and that was accross the city.

Low end power on the car blows, but it blew from the factory so nothing spectacular. I don't dig the car in a stop and go or stoplight ridden environment.
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Old 10-23-2013, 07:09 PM   #422
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After hearing that, I'm curious as to how my Moore axleback will be. I'll find out next week. I currently am running the muffler delete with turndown. At idle, it's great. Certain RPMs, excellent. But some of the lowwww CVT RPMs is really gets droney. Hopefully the Moore setup will get the same basic sound, but with less drone.
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Old 10-27-2013, 07:05 PM   #423
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Does anyone know anything about any companies potentially making headers for our cars? I'd love something a little more un-even to get a little more throatiness from the exhaust. I wasn't sure if the headers from the FRS/BRZ shared any resemblance with almost the same motor setup..
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Old 10-27-2013, 08:39 PM   #424
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Quote:
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Does anyone know anything about any companies potentially making headers for our cars? I'd love something a little more un-even to get a little more throatiness from the exhaust. I wasn't sure if the headers from the FRS/BRZ shared any resemblance with almost the same motor setup..
Check out rallisport racing..
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Old 10-27-2013, 08:39 PM   #425
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Excellent. Thanks!
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