stock exhaust vs. aftermarket cat-back

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Jul 7, 2004 | 09:08 AM

#16

gpatmac

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Joined: Nov 2002

Posts: 10,133

From: Lastweek Lane - Watertown, NY

Car Info: 02WRXpseudoSTiWannabeWagon

Quote:

Originally Posted by Mach5WRX

I think it's a waste to just get a cat-back.

Get a full turbo-back...a down-pipe and cat-back exhaust. <---this is where the HP gain is at.

If you just want sound and looks just get an axle back exhaust and save some $$$

Truer words rarely spoken.

You will be fortunate to see anything more than 6-7 hp with a catback. HP increase with regards to exhaust comes from alleviating restriction. Your car has 2 catalytic converters which amount to HP thieves. Also, your stock pipes aren't conducive to optimal flow.

If you get a chance, pickup Modern Engine Tuning or 4 stroke performance Tuning, both by A. Graham Bell.

Jul 8, 2004 | 12:12 PM

#17

Group B

Dahveed aka Robin Hood

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Posts: 4,793

From: Robbin' the Hood (Claycord)

Car Info: (RIP) '04 STi Silver

I for one needed slightly more flow than stock, without the legal issue of removing cats, and since I didn't want to port my wastegate, I simply got a catback, I saved a couple pounds, and it sounds ****.

Not everyone is in the position to start deleting cats...

Jul 8, 2004 | 06:11 PM

#18

ScoobyGDSTi

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yeah trying to keep the car legal...too much of a hastle for full turbo back and yeah i dont want to take out my cats...and the car has much power to boot already im sure u guys know...i use to have a 96 prelude w/ a custom hks turbo kit...boy was that fun, but not very reliable or legal...and when i took the kit off it was nothing but problems...so im jus doing stuff for flow and a lil bit of sound...u are right though...1200 is a lil much for an axleback...although it would be one of those eye catching things

Jul 8, 2004 | 09:45 PM

#19

vmar900

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Last edited by vmar900; Jul 11, 2004 at 11:35 PM.

Jul 9, 2004 | 09:49 PM

#20

ScoobyGDSTi

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what exactly is "drone"? ive seen it discussed when selecting an exhaust so im not sure exactly what that means...vmar, that 1200 was an axleback not catback so its a lil worse haha...do you have pics of the vishu unit on your car?

Jul 9, 2004 | 10:06 PM

#21

vmar900

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"drone" is when you are cruising at a certain speed at a certain rpm and the db level is at it's loudest. Just imagine cruising on the freeway at 65-75 and having your mom nagging you constantly. I don't have any pics, but if you'd like, next time I put my car in the air, I can snap it for you.