('09-'13) NA exhaust growl? - Subaru Forester Owners Forum
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post #1 of 40 (permalink) Old 06-10-2013, 12:51 PM Thread Starter
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NA exhaust growl?

I've been looking to get a little Subaru growl out of the car. I know its in there
Some people have been saying go Wrx cat back. Some say go Axel back.
Etc etc

I have a new 2013 stock Wrx cat back take off available for $200 (500 miles on it)
I also have a invidia cat back on a 2012 forester xt that's $400 and 130 miles away.
I can get cost on Subaru OEM parts. (That would be the nest option)


What would be a good way to get some growl out, without going loud.
Its a 2013 pzev 2.5 n/a auto

Thank you
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post #2 of 40 (permalink) Old 06-10-2013, 01:31 PM
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For Subaru rumble you need UEL headers. I don't know if anyone makes bolt-on UELs for the FB25.

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post #3 of 40 (permalink) Old 06-12-2013, 11:10 PM
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Im in the same boat, missing the Subaru rumble???

So we'll need full exhaust or just a header(when one is available)?
And will any of the OP's listed options help?
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post #4 of 40 (permalink) Old 06-13-2013, 07:32 AM
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I bet that BRZ headers will fit
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post #5 of 40 (permalink) Old 06-13-2013, 10:55 AM Thread Starter
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I was hoping a Wrx cat back or removing the resonator would do it.
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post #6 of 40 (permalink) Old 06-13-2013, 10:59 AM
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At least the WRX mufflers add some rumble to it.... but done incorrectly will add drone in the cabin.

Longer hangers and steel wool stuffing will solve that.
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post #7 of 40 (permalink) Old 06-13-2013, 11:31 AM
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I installed a Nameless Axleback system with the 4 inch mufflers on my rig and it sounds great. Last week I parked next to an STI and not to brag, but my Forester sounded much better than the STI. Not trying to say that my NA Forester will ever out perform an STI, but at least I can enjoy the gurgle-like sound that our engine can make. I'd highly suggest checking out Namelss' website.
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post #8 of 40 (permalink) Old 06-14-2013, 05:27 AM
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Muffler removal with straight pipes?
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post #9 of 40 (permalink) Old 06-14-2013, 06:16 AM
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The "Boxer Rumble" is as a result of the unequal length headers that are used on the turbo and necessary in order to mate them up with the turbo charger. The N/A pipes don't need to take this route and the resulting noise from the turbo exhaust is the unequal pulses, like a Harley Davidson which also has unequal length pipes. Removing the silencing just makes what you have louder but on a normally aspirated engine increasing the diameter of the exhaust pipes and removing the back pressure is usually counter productive, power wise even if the illusion of more go seems apparent. On a turbo charged engine, getting the exhaust out as quickly as possible works better hence the 3 and 3.5" systems although the diameter of the final exit pipe has little or no bearing on anything except the tone.

AFAIK, there are companies making UEL headers for the N/A but don't know about the newest engine, as suggested, the BRZ pipes might be worth checking out. If you do find a set though, the system will take a slightly different route under the car so all the pipes might need replacing. WRX back boxes are usually too short and ride too high thus burning the rear fender and possibly causing egress of fumes into the car.

As also suggested below, while this may sound "mighty" around town, once you get on the freeway, 'drone' from the rear of the car could make the journey uncomfortable and tiring, the better the road surface, the more obvious it will be.

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post #10 of 40 (permalink) Old 06-14-2013, 07:09 AM
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I'm happy to report that the drone is not unbearable at freeway speeds, in fact it sounds dare I say better. I've lost 0% in the way of performance/ mileage with this mod just to clear the air on that sack of bs, as I'm averaging 26 mpgs mixed city/highway driving.
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post #11 of 40 (permalink) Old 06-15-2013, 07:18 AM Thread Starter
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Originally Posted by Jhoo View Post
I'm happy to report that the drone is not unbearable at freeway speeds, in fact it sounds dare I say better. I've lost 0% in the way of performance/ mileage with this mod just to clear the air on that sack of bs, as I'm averaging 26 mpgs mixed city/highway driving.

That sounds pretty good to me. I'm averaging 22-23 mpg with city/highway.
Can you post a link to the exhaust note?
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post #12 of 40 (permalink) Old 06-15-2013, 07:49 AM
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That sounds pretty good to me. I'm averaging 22-23 mpg with city/highway.
Can you post a link to the exhaust note?
Ask and ye shall receive, 2013 Forester 2.5X with a Namelee axleback exhaust system - YouTube
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post #13 of 40 (permalink) Old 06-15-2013, 07:57 AM Thread Starter
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Sweet man thanks.
I went on the web site and I saw Wrx, out etc. Which model is the one you have?
Did it need welding or custom work?
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post #14 of 40 (permalink) Old 06-15-2013, 09:28 AM
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Sweet man thanks.
I went on the web site and I saw Wrx, out etc. Which model is the one you have?
Did it need welding or custom work?
This one is the WRX set from the 2008-2010 model. It required about 15 minutes of my time removing the stock exhaust and bolting up the Nameless set. No welding was necessary and this exhaust utilizes the stock hangers. Super easy upgrade.
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post #15 of 40 (permalink) Old 06-15-2013, 09:40 AM Thread Starter
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Originally Posted by Jhoo View Post
This one is the WRX set from the 2008-2010 model. It required about 15 minutes of my time removing the stock exhaust and bolting up the Nameless set. No welding was necessary and this exhaust utilizes the stock hangers. Super easy upgrade.


Sweet man! Consider it done! Going to order one this weekend.
I like the non-permanent move
Than again

http://shop.namelessperformance.com/...-w-4-mufflers/
This one?
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