Exhaust mods (possibly AccessPORT for '03 WRX)
#1
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Car Info: 03 WRX Wagon
Exhaust mods
Hey Guys,
Just some quick background: i have a 03 rex, and I'm not really into pimping my auto. If i do mod, i like genuine parts and dont really like dealing with 3rd party aftermarket stuff.
That being said, i would like to install an STi axel back, purchase a catless DP and purchase new gaskets. The borla exhaust, which i believe is a optional Subaru part, is a bit to pricy for me, and i like the look of the STi axel back. TO the point, I'm a newb with subbies and i didnt know if i needed a cobb accessport to go along with my exhaust modd.
Just some quick background: i have a 03 rex, and I'm not really into pimping my auto. If i do mod, i like genuine parts and dont really like dealing with 3rd party aftermarket stuff.
That being said, i would like to install an STi axel back, purchase a catless DP and purchase new gaskets. The borla exhaust, which i believe is a optional Subaru part, is a bit to pricy for me, and i like the look of the STi axel back. TO the point, I'm a newb with subbies and i didnt know if i needed a cobb accessport to go along with my exhaust modd.
Last edited by ILiveAgain; 04-20-2006 at 04:45 AM.
#3
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If you have a catless DP and just an axleback, you'll probably want to change your midpipe as well. That will choke the airflow from your DP making your slightly larger axleback about as useful as your stock one.
I'd recommend going for a full turboback or catless DP w/catback exhaust, preferrably with a catless uppipe as well.
I'd recommend going for a full turboback or catless DP w/catback exhaust, preferrably with a catless uppipe as well.
#4
if he just wants the dp and the sti axel back that should be ok cause the wrx and sti mid pipe are the same if im not mistaken, i have a catless dp and the sti catback on my 02 it sounds perfect, its just loud enough, but doesnt draw attention
#5
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Here's another suggestion. Go with a catless DP and a Borla Hush catback exhaust. It's pretty quiet and has the stock look (not a huge obvious cannister) complete w/the twin tips. You'll have a full 3" turboback.
I guess if you're not going to go too extensive w/the mods then keeping the stock midpipe would be alright, but then you're not utilizing the potential of the catless DP (most are 3" in diameter).
If all you want is the sound and the look, then the STi axleback helps a *little*.
I guess if you're not going to go too extensive w/the mods then keeping the stock midpipe would be alright, but then you're not utilizing the potential of the catless DP (most are 3" in diameter).
If all you want is the sound and the look, then the STi axleback helps a *little*.
#6
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Originally Posted by subie OCD
For the 02/03's you dont NEED the AP, but it will take advantage of the bigger pipes and give you some more power. I would put in a catless uppipe first.
#8
Originally Posted by 1sicwrx
If he is getting a catless dp and up-pipe, won't he need an Accessport to bypass various exhaust and emissions sensors that would cause CEL's to come on? I could be mistaken but I thought that was one of the advantages of having the AP.
Originally Posted by ILiveAgain
Besides the 2.25" vr 2.5" axel back, what are the other exhaust differences between the WRX and the STi?
#10
If you want to keep your oem axleback or use an STi axleback, take a look at the TurboXS stealthback exhaust. Its a 4" downpipe that tapers to 3" at the midpipe, then goes down to 2.5" so you can connect your factory axleback. You can get it catless or with a highflow cat after the downpipe.
Instead of buying a 2.5" catless downpipe, you could always gut out the cats. Or buy a used oem exhuast and gut that so you still have your original.
Instead of buying a 2.5" catless downpipe, you could always gut out the cats. Or buy a used oem exhuast and gut that so you still have your original.
#11
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How big is the exhaust outlet for the stock WRX turbo? I think a 4" DP is designed for a aftermarket turbo, but i could be wrong. Sounds like a nice option for a sleeper thou. I've read alot about gutting cats, but it would be nice if someone had a link to a write-up on gutting.
#12
#14
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Ive found alot of good info, but it would be nice if someone could link me to a write-up for gutting a cat.
Also, I would like to buy new exhaust gaskets. I was planning on purchasing them from the dealer, but if anyone has some advice on this issue, it would be welcomed.
Thanks
Also, I would like to buy new exhaust gaskets. I was planning on purchasing them from the dealer, but if anyone has some advice on this issue, it would be welcomed.
Thanks
Last edited by ILiveAgain; 04-24-2006 at 06:14 AM.