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Old 07-16-2012, 03:07 AM   #1
bryannako
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Default 07 2.5i exhaust setups questions

OK i looked through a lot of the threads and it seems that the exhaust choice for any car comes down to what the person wants. So I want a exhaust setup that is quiet to me medium volume and is about medium volume or a little more when accelerating hard. I would also like to have the typical boxer sound that all subie owners go for.

I'm trying to spend as little as possible to just upgrade my exhaust to give my 2.5 a nice sound. So I was thinking of buying a 07 wrx catback and maybe deleting the resonator and changing the muffler or just changing the muffler on the catback and keeping the resonator.

I can't afford a stromung or any other exhausts now..

Any advice would be greatly apprectiated, and if anyone has a nice setup in the Bay Area and is willing to sell that would also be appreciated.

Thanks!
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Old 07-16-2012, 04:37 AM   #2
bryannako
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what about a spt exhaust on my 2.5i?
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Old 07-16-2012, 10:53 AM   #3
J.Gibbs
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To get that subie rumble you're gonna have to do UEL headers.

Also, keep the midpipe resonator. It will get rather raspy without one.

If you want to do this the cheapest way possible, have an exhaust shop make you a whole new cat back with the aftermarket muffler of your choice and a resonator or glasspack in the midpipe. Will be less than a bolt on and will be made to your liking
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Old 07-16-2012, 10:57 AM   #4
alt14
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I bought a magnaflow 2.5-2.5 inch straight through muffler and it's perfect for me, not to loud but definitely noticeable, I only paid about $70 to have it bought and put on with new hangers, unfortunately the boxer sound is going to set you back in price, but the best way I found and will save you a lot of time and frustration would be rallisport racing uel headers that are bolt on with no modifications needed
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Old 07-16-2012, 10:59 AM   #5
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Quote:
Originally Posted by alt14
I bought a magnaflow 2.5-2.5 inch straight through muffler and it's perfect for me, not to loud but definitely noticeable, I only paid about $70 to have it bought and put on with new hangers, unfortunately the boxer sound is going to set you back in price, but the best way I found and will save you a lot of time and frustration would be rallisport racing uel headers that are bolt on with no modifications needed
Those mufflers have a nice sound to them.

And OP, you want to look at 2.25" piping or maximum of 2.5"
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Old 07-16-2012, 11:59 AM   #6
alt14
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^^
Yep, anything more is over kill, and well trying to and more power to a 2.5 na is kind of a joke unless you've got big bucks
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Old 07-16-2012, 12:08 PM   #7
J.Gibbs
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Quote:
Originally Posted by alt14
^^
Yep, anything more is over kill, and well trying to and more power to a 2.5 na is kind of a joke unless you've got big bucks
Agreed

Lets make this simple, if you want power and sound, go with a full header back system (headers, high flow cat, resonated midpipe, and axle back muffler). Then you could even do the hybrid intake or a full CAI and have the car tuned. (Since it's not a turbo beast all you need is a street tune)

Thats basically it for easy mods... you could spend a ton of money and do new cams and stuff but honestly its not worth it
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Old 07-16-2012, 09:56 PM   #8
bryannako
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Thanks a bunch guys! I'm thinking just getting a stock sti catback and having a exhaust shop put it on and then saving up for UEL's
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Old 07-16-2012, 10:03 PM   #9
J.Gibbs
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Quote:
Originally Posted by bryannako
Thanks a bunch guys! I'm thinking just getting a stock sti catback and having a exhaust shop put it on and then saving up for UEL's
That's a nice cheap route to go. Won't sound bad at all with the headers
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Old 07-16-2012, 11:31 PM   #10
alt14
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Im not sure how much of a difference their is in the 2.5i and sti muffler but I put my headers on first and I couldn't tell anything different till I got the new muffler on
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Old 07-17-2012, 10:44 PM   #11
Eyedoc Orlando
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It's not cheap, but I have the borla catback on my 2.5i - not only did it bolt up with ease, it also looks gorgeous, has a great tip, and around town sounds fantastic. I love it, but i will admit its a teensy bit loud on the highway. I have kept it on the car though since I'm ok with a little noise for now, but if you do a lot of highway miles I would just leave the exhaust bone stock and enjoy good music instead

As far as power increases go, I might've gained a little in the upper end (3-5hp) at most, but it's nothing very noticeable. What is noticeable is the burble and pop lovelyness.
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Old 07-19-2012, 10:18 AM   #12
RecoveringSaabaholic
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I just installed a CNT equal length with a high flow cat, and an OBX catback on my 2.5i. The sound is not quite as nice as those that have the UEL setups. However, it definitely feels more responsive and feels like it pulls a little harder up towards the top. I was told that I should get more low end torque with the EL setup, but if it is there it is negligible. I dont know whether the choice to go 2.5 instead of 2.25 in the catback affected this, but I definitely didnt lose any.

Personally, I dont think it sounds that bad, and I prefer to have more power (even if just a little) over a "better" sound. Most people here it seems would disagree, and thats fine, but I thought I should throw my $.02 in.

BTW the whole setup cost me $710 off ebay plus about $10 at napa for new spring loaded exhaust bolts (thanks maine winters) and was the simplest thing to put on. The cost for a even a cheap NAPA catback (~650) would have been close to what I paid for the whole system.
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Old 07-19-2012, 06:30 PM   #13
ImprezaJake
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on my 2.5i I have uel headers off of ebay for $70, took them to a muffler shop and had them cut them through the middle to fit my car and reweld for $30 and had the downpipe cut and welded to a 2.5inch stainless steel straight pipe with a midway magnoflow catalaytic converter and a magnoflow tip for $200, and honestly it opened the car up and I could feel the difference in power. It has the boxer rumple and pops each time i shift, does anyone think I should get a small street tune with that since I have an intake and other mods? it seems like my rpms are kinda slow in the 0-2500 range
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Old 07-19-2012, 09:35 PM   #14
Steve2.5i
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Quote:
Originally Posted by ImprezaJake
on my 2.5i I have uel headers off of ebay for $70, took them to a muffler shop and had them cut them through the middle to fit my car and reweld for $30 and had the downpipe cut and welded to a 2.5inch stainless steel straight pipe with a midway magnoflow catalaytic converter and a magnoflow tip for $200, and honestly it opened the car up and I could feel the difference in power. It has the boxer rumple and pops each time i shift, does anyone think I should get a small street tune with that since I have an intake and other mods? it seems like my rpms are kinda slow in the 0-2500 range
Tune for intake or put the OEM box back on. Read the sticky for that one.
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Old 07-20-2012, 10:10 AM   #15
J.Gibbs
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Quote:
Originally Posted by ImprezaJake
on my 2.5i I have uel headers off of ebay for $70, took them to a muffler shop and had them cut them through the middle to fit my car and reweld for $30 and had the downpipe cut and welded to a 2.5inch stainless steel straight pipe with a midway magnoflow catalaytic converter and a magnoflow tip for $200, and honestly it opened the car up and I could feel the difference in power. It has the boxer rumple and pops each time i shift, does anyone think I should get a small street tune with that since I have an intake and other mods? it seems like my rpms are kinda slow in the 0-2500 range
Definitely get a street tune done or you may have some issues down the line with the intake installed.

Just search DIY hybrid intake on here and read up on that to get an understanding as to why
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