Ordering this weekend... - Subaru WRX Forum
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#1 Old 03-09-2005, 11:12 PM
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Ordering this weekend...

I've heard that all exhausts give pretty much the same hp, so I was wondering if this setup would give me about the same power/times as what Cobb was stating (stage 2) on their website(http://cobbtuning.com/wrx/power-s.html#stage2) and it would all work together.

1. Helix Up-pipe - $179
2. Helix Downpipe - $259
3. Borla Hush Catback Exhaust - $499
4. Cobb Access Port Engine Management - $595
5. K&N Filter - $50

I want a quiet exhaust so I figured this would be the best route. Thanks.
-Justin
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#2 Old 03-10-2005, 01:36 AM
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That is the same exhaust setup that I was planning on exactly. I would really like to know how it works out for you and most importantly how it sounds, because I want things quiet as well, while still getting the HP gains.

Mark
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#3 Old 03-10-2005, 01:52 PM
 
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Sounds like a very good plan and yes you will have the same results. I wouldn't get the K&N though, its basically a waste of $$.
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#4 Old 03-10-2005, 02:16 PM
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That's a good plan if you aren't planning on doing anything else to your car.
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#5 Old 03-10-2005, 03:09 PM
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sounds awesome 86.. I have the exact same plan as you for my new 05 wagon. please drop me an email when things are complete to let me know how it sounds and works..
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#6 Old 03-11-2005, 06:35 PM
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Quote:
Originally Posted by Cosmo
That's a good plan if you aren't planning on doing anything else to your car.
Why is it only good if he isn't going to do anything else? is it because of the cobb access port instead of a UTEC?

I only ask because that is exactly what my plan to start with is, except a UTEC instead of cobb access port and no K&N.

Thanks,

Mark
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#7 Old 03-11-2005, 06:53 PM
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AccessPort will only support the mods that the shelf maps dictate. If you have a wrx you also have the option of going "stage 2.5" which is VF30/34 and pinks.

I have the Cobb catted downpipe along with the borla hush catback on my STi, and had just the catback on my WRX before. You WILL know that it has an aftermarket exhaust, especially under throttle. It's not like you're putting on a higher flowing exhaust that will sound like stock. That said, I love the sound of car now, and it hasn't attracted any unwanted attention from the police. (yet, knock on wood)

-Trevor

FP Green'd 04 STi

Trevor
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#8 Old 03-12-2005, 09:57 PM
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What's more restrictive, the downpipe or the stock catback part of the exhaust?

highflow catted downpipe + catback exhaust or
catless downpipe + stock exhaust ?

Why don't you guys like K&N filters? I haven't heard of a car yet that hasn't seen gains on a less restrictive filter element..

-dp
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#9 Old 03-13-2005, 09:55 AM
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The downpipe is the most restrictive piece in your exhaust. That's why you gain the most power replacing it. The stock cat-back is not very restrictive.
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#10 Old 03-14-2005, 11:20 AM
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Quote:
Originally Posted by dmitri

Why don't you guys like K&N filters? I haven't heard of a car yet that hasn't seen gains on a less restrictive filter element..

-dp
I'd say go with an HKS or Perrin panel filter instead of the K&N !Notfunny!
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#11 Old 03-14-2005, 11:40 AM
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Quote:
Originally Posted by dmitri
Why don't you guys like K&N filters? I haven't heard of a car yet that hasn't seen gains on a less restrictive filter element..
-dp
The only thing a K&N would do is give you a tiny gain in pre-spool performance, and if you are lucky it will make it so you will hit full boost 100rpms sooner.

Your turbo is capable of pulling air through the filter MUCH better than the intake stroke of a cylinder, so the filter is not as much of a limiting factor as in an N/A car.

remember, with an n/a car the engine is sucking "As much air as it can get" and with a turbo it is sucking "As much air as it wants" changing the filter will make it easier to suck the air it wants, but that is a huge difference from an n/a car where it will actually change how much air it can get.
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#12 Old 03-14-2005, 06:16 PM
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Sorry dont kno how to post a new thread

ok i gotta ask a few questions
I know every seems to say cold air intakes are not made good for the Wrx because of the harsh bends the air has to travel thorugh. But if u put one on and u have ## car customed tuned will it make a difference. I went to Speed Technik in Norwalk, CT and i asked to get my car customed tuned with ECUTEK and they said i should get a CAI. I currently have a full APS turbo exhaust, Perrin TMIC and turboxs boost controller. So i was wondering if tunning it makes a difference or should i not get the CAI. And if i do get it do i have to worry about water getting in or it making my car lose power. Also I seem to have a whistling sound coming from my Gauges they are the stock gauges from Subaru. It gets really annoying so if anyone knew how to get rid of it could they tell me.

Thanks
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#13 Old 03-14-2005, 06:49 PM
 
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It is hard to tune for any CAI. If somebody told me to put a CAI on, I wouldn't trust those people because if you know anything about the WRX, it is almost universal that CAI's are bad for the car because they lean it out and they are hard to tune for.
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#14 Old 03-15-2005, 07:07 AM
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The problem is that the CAI flows inconsistently. You can't "tune for it" because every time you drive it it's different.
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#15 Old 03-15-2005, 11:14 AM
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cold air intakes

I dont kno what i am goin to do. I might put in the intake. But i am definetly getting it tuned with ECUTEK. But dont u need to take the stock air box out when adding more horsepower. But can u give me any advise with my gauges they make weird whislting noises when u the boost gauge goes over 0.

Give me some advice i listen to everything
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