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Lose 5 lbs in one day

 
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85 T/A WS6
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Joined: 18 Feb 2004
Posts: 539
Location: Buckley

1985 Pontiac Trans Am

PostPosted: Tue Jun 16, 2009 6:09 pm    Post subject: Lose 5 lbs in one day Reply with quote


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1985 Trans Am Recaro Option (AS5)
67,000 miles 5.0 TPI Hi Flow MAF
TPI Airfoil w/Bypass Flowmaster WS6 (.92g)
3:27 Borg Warner Posi K&N Filtration
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blue89
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Joined: 23 May 2006
Posts: 3482
Location: Bellingham/Eugene

1986 Chevrolet Camaro RS

PostPosted: Wed Jun 17, 2009 6:55 am    Post subject: Reply with quote

Lol, same inside diameter?
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86 RS - 7.4L V8 SOLD
89 RS - 3.25L V6 REMOVED
89 RS - 5.7L LT1 SOLD
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85 T/A WS6
Member


Joined: 18 Feb 2004
Posts: 539
Location: Buckley

1985 Pontiac Trans Am

PostPosted: Wed Jun 17, 2009 7:21 am    Post subject: Reply with quote

Yes, its 3-1/2" wide, Catco direct fit, hi flow.

The old cat was broke about 1/8 the way on the exit end, so the element didnt align. Runs better now Smile, slight improvement on the exhaust note too.

Im getting too old for this!

See you at Meeker Days Smile
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91camaro_rs
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Joined: 03 Dec 2008
Posts: 1712
Location: Fox Island, Wa

1991 Chevrolet Camaro RS

PostPosted: Wed Jun 17, 2009 9:16 am    Post subject: Reply with quote

im thinkin about replacing my cat with a hi flow, i gutted mine and i think i lost some power by doing that Laughing but it sure does sound good with it gutted
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91RSVert
Member


Joined: 16 May 2007
Posts: 2736
Location: AR

1991 Chevrolet Camaro RS

PostPosted: Wed Jun 17, 2009 12:11 pm    Post subject: Reply with quote

I supposibly have a "hi flow" that can be bolted in mine. I notice a MAJOR power drop when I bolt it in.
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Twilightoptics
Hardcore (12sec Club)


Joined: 13 Jan 2004
Posts: 9191
Location: Auburn , WA

1987 Chevrolet Camaro IROC-Z

PostPosted: Wed Jun 17, 2009 1:05 pm    Post subject: Reply with quote

91RSVert wrote:
I supposibly have a "hi flow" that can be bolted in mine. I notice a MAJOR power drop when I bolt it in.


What did you have in there before? You shouldn't really notice anything. A good cat of proper sizing should only snag 5-7hp and that's not going to be anything but barely noticable if at all in the butt dyno.

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A redline a day keeps the carbon away!
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dlp
Member


Joined: 28 Mar 2005
Posts: 374
Location: Bothell, Wa

1990 Chevrolet Camaro IROC-Z

PostPosted: Wed Jun 17, 2009 8:36 pm    Post subject: Reply with quote

Long story short, I have a brand new no name direct fit high flow CAT and just recieved a used SLP exhaust system from a guy in Texas that included a Catco CAT. The Catco CAT is alot lighter. But.....I cant see through it. Wounder if they actualy work? If not there is no reason to installl it.
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91RSVert
Member


Joined: 16 May 2007
Posts: 2736
Location: AR

1991 Chevrolet Camaro RS

PostPosted: Thu Jun 18, 2009 2:39 am    Post subject: Reply with quote

Twilightoptics wrote:
What did you have in there before? You shouldn't really notice anything. A good cat of proper sizing should only snag 5-7hp and that's not going to be anything but barely noticable if at all in the butt dyno.


I'm comparing to an "off road test pipe" Wink
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BigDaddyVu
12sec Club


Joined: 31 Jan 2004
Posts: 1118
Location: Spokane, Wa

1986 Chevrolet Camaro Z/28

PostPosted: Fri Jun 19, 2009 8:45 pm    Post subject: Reply with quote

i made mine lighter by taking a section of galvenized pipe and a 10 lbs hammer and shake out the bits. and it didn't cost anything.
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91camaro_rs
Member


Joined: 03 Dec 2008
Posts: 1712
Location: Fox Island, Wa

1991 Chevrolet Camaro RS

PostPosted: Fri Jun 19, 2009 9:18 pm    Post subject: Reply with quote

BigDaddyVu wrote:
i made mine lighter by taking a section of galvenized pipe and a 10 lbs hammer and shake out the bits. and it didn't cost anything.



i did the same thing Laughing
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