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In the service manual, the S-pipe is part of the cat, so you will have to deal with that (emissions laws). I don't know how it is attached to the cat, though. I was looking at it, and the pipe is welded to a plate, which is in turn attached to the cat, but I couldn't tell how right away. If that's true about the S-pipe being a big restriction, I may go ahead and see what I can do about it, but it will have to wait until I pass 50,000 miles.
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Wife and a dog, they both think they\'re Kujo.<br /> <br />1999 3.8 A4 Y87<br />Navy Blue Metallic<br />BFG G-Force KDWS 275/40/17s, <br />WS6 Wheels (17x9)<br />Phoenix Transmissions 2400 Stall Converter<br />FRA, Holley Powershot filter, Whisper Lid, Ported Throttlebody<br />2000 manifolds, Flowmaster, WS6 Tail Pipes, <br />MSD 8.5mm Wires, MSD Coils, Autolite plugs<br />Performance Cryogenics treated rotors<br />1LE Sway Bars and panhard rod, 1LE front springs w/SLP Bilsteins, stock rear springs w/ 3rd Gen Bilsteins, BMR STB, KBDD SFCs, 1LE rear lower control arms, 1LE front lower control arms<p>1968 Chevelle Malibu 327 TH350
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