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Thread: exhaust
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02-02-2020, 12:45 PM #1
- Join Date
- Mar 2019
- Location
- North carolina
- Posts
- 2
Blackish- 1999 trans am
exhaust
to cat or not to cat! do yall run cats or no. trying to make the ultimate decision
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02-03-2020, 07:15 AM #2
- Join Date
- Feb 2009
- Location
- Florida Man Status Acheivement
- Posts
- 11,759
Navy Blue Metallic- 98 T/A w/ mods, 00 FBVert
Depends on your state.
Legally you must have a CAT in the US. However some of us do not because our states do not have Emmission or Vehicle Inspections.
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02-05-2020, 07:58 AM #3
I opted for high flow cats when I upgraded the exhaust on our '02. No regrets and at least something remained "legal" on the car.
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02-05-2020, 06:25 PM #4
- Join Date
- Sep 2010
- Location
- Bel Air, Maryland
- Posts
- 1,675
Silver- '02 Trans Am WS-6, 6M
SLP Air Lid/Smooth Bellows
L76 6.0L block, PRC Ported 243 heads, Texas Speed 224R cam.
Kooks Emissions LT Headers/Catted Y pipe
NGK TR55 plugs
Magnaflow Cat-back
Spohn Front Upper Tubular Control Arms
UMI Front Lower Tubular Control Arms
UMI Front Sway Bar
UMI Rear Lower Control Arms/ Adjustable Panhard Rod
UMI Welded-on Two Piece Subframe Connectors
Factory C5 Z06 17x9.5 wheels w/ 285-40-17 Continental Extreme Contact Sports all the way around.
Dyno Dynamics dynoed @:
415 rwhp
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03-06-2020, 04:42 PM #5
I went with the catless Y pipe when I had my longtubes installed. The sound of this engine wide open with LTs and ORY to me is incredible.
2000 Trans Am WS.6 M6
SLP lid & bellow w/ K&N, GMMG catback w/ Corsa Clones, UMI SFC, UMI Adj. Panhard, UMI Adj. TQ arm w/ relocation kit, QTP Longtube headers ORY, LS6 intake, EGR/A.I.R delete.
Eibach prokit, Bilstein HDs, Nitto NT555s, skip shift elim, whiteface overlays, 20% tint, matte black decal/overlays
YouTube.com/DarrenWS6
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