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Old 03-02-2004, 06:05 PM   #1
04Turboboxer
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Question Confused between down pipe and cat back

Hello all -

I am confused about which one is better for not promoting boost creep, but yet still adding some more power?

First I hear that a cat-back system will not give you boost creep issues, but now I am hearing different?

So is it better just to do a down pipe and leave the stock cat-back system.

Thanks for any help!
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Old 03-02-2004, 06:36 PM   #2
ErrolR1919
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Default Exhaust and boost creep

turboboxer,

Just changing the catback will only give you a very slight performance increase.

Changing the downpipe to either a catless version or a single high-flow cat version will likely yield more gains than just a catback.

Ideally, you will want to open up both of these exhaust componets, but that's where you start to run into boost creep issues. You can run *either* a catback *OR* a downpipe and not get boost creep.

My advice is that if you are looking for the most hp go with just a divorced downpipe and keep the stock cat-back.

However, some full turbobacks with high flow cats seem not to cause creep according to some members on this board.

Errol
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Old 03-02-2004, 09:00 PM   #3
DISCOPOPE
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cat back = cool sound and a tiny weeny bit less back pressure..
imo do a stealthback and keep a cat for no boost creep and more power..
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Old 03-02-2004, 11:18 PM   #4
Corn-Picker
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Default Re: Confused between down pipe and cat back

Quote:
Originally posted by 04Turboboxer
Hello all -

I am confused about which one is better for not promoting boost creep, but yet still adding some more power?

First I hear that a cat-back system will not give you boost creep issues, but now I am hearing different?

So is it better just to do a down pipe and leave the stock cat-back system.

Thanks for any help!
If you do any modding it's a great idea to pick up something like a delta dash or at the very least some gauges. You need to know what you're car is doing before and after you mod it to make sure nothing is going wrong.
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Old 03-03-2004, 02:41 AM   #5
firedust
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Random Technology out of snellville, GA makes a DP for the STi they say that doesnt cause boost creep
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Old 03-03-2004, 02:04 PM   #6
04Turboboxer
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Thanks for all the help guys! Looks like I will do the down pipe for now.

I will focus my attention from there on the handeling/suspension.

Cheers
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