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Old 03-14-2003, 02:51 AM   #1
topgrinder
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Member#: 31649
Join Date: Jan 2003
Default what quiet axleback for catless pipes

im runnin catless and i had the txs axleback section and it was just much too loud.... now im usin the stocker........ i know for a fact the stocker is robbin me of some power at my stage 4 wrx but the txs just gave me a headache... loud idle,, very loud at wot ,, and my backfires were extremly loud...... pop pop...... i sold the txs muffler to this dude runnin close to stock and his car sounded great,, wasnt loud at all,,, what options should i be lookin at to keep sound relativly down but provide good flow to free up some power and spool,,,,,,,,, i noticed i lost 100-150 rpm spool when i put the stocker back on
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Old 03-14-2003, 03:59 AM   #2
iloveturbos
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Member#: 22868
Join Date: Aug 2002
Vehicle:
2002 WRX
MBP

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i heard the scoobysport axle-back on the txs catless setup. it sounded super nice. only loud when you stepped on it at WOT. prodrive is nice, but i only heard that through clips online.
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Old 03-14-2003, 08:55 AM   #3
nhluhr
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Location: Seattle, WA
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2008 Mazdaspeed3
2006 Wrangler Sport

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I'm in the same boat as you.... catless and my SPT axleback was just TOO loud.

I saw on the back of Turbo magazine there was an ad for the GReddy Evo catback and they claim it was the quietest in a test of several... 94dB at idle, 92dB at 3000rpm i think.

Most vendors sell the catback system for something like $499-$599.
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Old 03-14-2003, 09:20 AM   #4
Wolfen42
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Location: Cincinnati, OH
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I turbocharge campfires.

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I just got a Scorpion axleback. It sounds like the Prodrive and is straight through so it would breathe better than the stocker. There's a guy over on ClubWRX who got people hooked up with a place down in Florida that's unloading a bunch of them.

There's a guy running it with his stealthback and complaining that it's too quiet so it might be what you're looking for... heh...
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Old 03-14-2003, 09:44 AM   #5
Need4Boost
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Chapter/Region: Tri-State
Location: 1^2 Mile, NJ
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2004 Lightning,
2001 BMW 330ci

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I am in the same boat as you. I recenly gutted my TXS cat (boy do i regret doing that now).

I know prodrive is quiet but over priced. As mentioned, the Scorpion is pretty much identical to the Prodrive but half the price.

I can't put my stocker back on since I sold it already.

I will either buy the TXS cat again (sigh) or just install a quieter axle back.
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Old 03-14-2003, 10:46 AM   #6
lstepnio
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2004 Forester X

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I'm catless with a HKS downpipe and a ATR uppipe and I have the Prodrive WRSport and it's sounds really nice w/o being annoying loud. I would go ahead and order the Scorpion version. I even think that the Scorpion is one of the least expensive catbacks available. I highly recommend the Prodrive.
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