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Old 09-16-2010, 07:30 AM   #1
WRXSteye20008
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Default Whistling Tip!

My fiance bought a 2006 Impreza and I am super happy for her. Sadly it has a whistling tip on the exhaust. Sounds like a turbo under acceleration which is funny for a couple months and now its annoying when I have to ride in the car. I want to get her a STP Axelback or possibly a CBE which I have laying around and have forsale atm. This is her DD and there is no plans to modify it in any way. Buying an exhaust would be it rather then buying a new OEM one.

My question is when I went stage 310hp w/ 345lbs torque @ 20psi with 93octane with my STI ( I hate stage numbers lol) obviously I got a tune. If I installed an AB or CB Exhaust on her car would she need a tune as well as she is N/A? I want to say 'No' but I also could be wrong, hence why I am asking.

Anyone know off hand?
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Old 09-16-2010, 07:40 AM   #2
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Haha, mine has the annoying sound too. I believe it's because the baffles rusted out.

But you shouldn't need a tune for an N/A axleback. It has little to no gains.
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Old 09-16-2010, 07:43 AM   #3
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If there arent any intentions of modifying it other than to get rid of the whistling sound, then all you need is the axle back. Therefore, no tune required. It shouldnt have an effect on the O2 sensors since they are before the axle back portion.
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Old 09-16-2010, 09:49 AM   #4
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That is what I thought, not really looking to get near the CATS thus emissions not being an issue. Plus she will get the boxster rumble which she loves on my car
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Old 09-16-2010, 10:30 AM   #5
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Them whistle tips go WOO WOO!
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Old 09-16-2010, 11:16 AM   #6
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youll need the n/a unequal length headers for the boxer sound on te n/a's since they come with equal lengths
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Old 09-16-2010, 11:16 AM   #7
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Oh man there are some hondas in my area with those whistle tips, quite lame if you ask me.

I'd rather have no sound that a fake turbo sound LOL!

Whether you get an axleback or catback, you won't need a tune.
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Old 09-16-2010, 11:29 AM   #8
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+ 1 for unequal lenght headers, otherwise it will sound like a honda.
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Old 09-16-2010, 11:54 AM   #9
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Quote:
Originally Posted by EvileyeZ88 View Post
Them whistle tips go WOO WOO!
I Ironically yelled that out the window when someone asked what was wrong with our exhaust at a stop light one time


Quote:
Originally Posted by BKscooby View Post
+ 1 for unequal lenght headers, otherwise it will sound like a honda.
So you are telling me if I put a Axle-Back or Cat-Back of her N/A Car I will not get the boxster rumble and it will sound like a honda?

I have a hard time believing it will sound like a honda with just a AB or CBE. Does anyone have a video of this? <----I now do believe after watching this:



**** she wants the sound and that means getting headers, would at THAT point I need a tune? I am thinking Yes.

Last edited by WRXSteye20008; 09-16-2010 at 12:00 PM.
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Old 09-16-2010, 01:18 PM   #10
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1st Generation legacies have UEL headers. Would those be able to bolt up? They'd be a hell of a lot cheaper than getting borlas.
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Old 09-16-2010, 01:21 PM   #11
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Quote:
Originally Posted by WRXSteye20008 View Post
I Ironically yelled that out the window when someone asked what was wrong with our exhaust at a stop light one time




So you are telling me if I put a Axle-Back or Cat-Back of her N/A Car I will not get the boxster rumble and it will sound like a honda?

I have a hard time believing it will sound like a honda with just a AB or CBE. Does anyone have a video of this? <----I now do believe after watching this: YouTube - My 2006 Impreza 2.5i with STi axle back



**** she wants the sound and that means getting headers, would at THAT point I need a tune? I am thinking Yes.
N/A cars from 06+ lost their *some* boxer rumble due to the new exhaust configuration making it more equal length than the previous years. But really, I have a stock exhaust 05, and it doesn't have that much boxer rumble to it either.

To be honest, in order to get ANY boxer rumble, you need aftermarket UEL Headers.

As it stands, N/A stock subarus are just too quiet to actually appreciate any kind of boxer rumble on the street.

And despite what some overly-dramatic people say, no it does not sound like a honda. It never will unless you really try.
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Old 09-16-2010, 02:06 PM   #12
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If you're going to put UEL headers on it, you're going to either need to get them custom made, or you're gonna need a new cat pipe (in addition to some other minor stuff).
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Old 09-16-2010, 02:19 PM   #13
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Welding up an new exhaust/cat is no issue since that's not to hard to do. I will just get her an axle back and call it a day or try to find a used OEM exhaust and leave it at that. Crap that sucks about having to have headers, I never knew that. I just assumed because it was a 2.5i it would have the sound. Well this is why I asked! Thanks guys
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Old 09-18-2010, 09:30 PM   #14
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Old 09-18-2010, 10:36 PM   #15
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LOL did that guy blow right through a stop sign while on camera?
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Old 09-18-2010, 11:00 PM   #16
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LOL did that guy blow right through a stop sign while on camera?
yes
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Old 09-19-2010, 05:38 AM   #17
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We do it fo decowation
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Old 09-20-2010, 02:09 PM   #18
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Were they driving a MKIII Supra??? Someone should take that away from them and give it someone who isn't so damn stupid. The cops should tow the car for have running the stop sign, keep it safe in the impound and away from those loonies.
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Old 10-09-2010, 12:33 PM   #19
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With some fab work you can bolt the WRX headers to a N/A impreza. Any proficient exhaust shop should do really. Check this thread for more info.

http://forums.nasioc.com/forums/show....php?t=1420502
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Old 10-10-2010, 09:38 PM   #20
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No tune needed for exhaust as it doesn't change the airflow going into the engine.
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Old 10-10-2010, 10:32 PM   #21
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Quote:
Originally Posted by RaineMan View Post
No tune needed for exhaust as it doesn't change the airflow going into the engine.
headers change the air airflow entering the cylinders in a couple ways, and a tune shouldn't be required to be safe unless the headers are actually worse than the factory exhaust manifold. BUT without a tune, you can't maximize the potential gains that some headers would allow.
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Old 10-11-2010, 10:03 AM   #22
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no tune required. i would look at stromung at boxer4racing.com, whether it be axleback or catback. they also have cat sections. my car is not loud cruising at all unless ur on it. i have the borla header, random tech cat, and stromung exhaust.
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Old 10-13-2010, 10:09 AM   #23
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It's only about 50$ to have it removed......

I cannot believe people are paying to have these put on there cars. when we were kids, you could buy bolt on whistle tip at novelty stores that just slipped onto the end of the pipe....they were 4$....so we would buy 20 of em and randomly "install" them, free of charge...no damage done, and funny as hell(we thought so, we were 12)...imagine starting your car, and having it make that retarded whistle... And now people are paying money for that crap..I guess I was ahead of my time...no probably not...
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Old 10-13-2010, 10:14 AM   #24
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