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Aftermarket Y pipe

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Old May 24, 2005 | 05:45 PM
  #1  
Don 79 TA's Avatar
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Joined: Apr 2005
Posts: 447
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From: Long Island NY
Car: Hers: 88 Formula 350
Engine: TPI
Transmission: Auto
Axle/Gears: 10 bolt Posi
Aftermarket Y pipe

just wondering if it's a worth while investment to get an aftermarket Y pipe
http://www.macperformance.com/store/...Product_ID=450
i plan on keeping the stock exhaust manifolds, but have a single 3" cat back with single flowmaster outlet

do the aftermarlet ones aid in flow that would warrant buying it?
i plan on taking the exhaust down to install some SFC's, so now might be a time to consider this.

i also have a test pipe to use as well
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Old May 24, 2005 | 10:01 PM
  #2  
1989GTATransAm's Avatar
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Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Yes to your questions. Flowmaster makes some good ones. Allen
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Old May 25, 2005 | 06:09 PM
  #3  
five7kid's Avatar
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Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
What stock manifolds?
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Old May 26, 2005 | 08:17 AM
  #4  
1FastZ's Avatar
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Joined: Jul 2001
Posts: 667
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From: Louisville Kentucky U.S.A.
Car: 86 Iroc Z
Engine: 406
Transmission: 350 Turbo
Axle/Gears: 373
what size are the flowmaster y-pipes????
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