ZZP down pipe on a series 1 - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 12-18-2007, 09:22 PM   #11
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Check the O2 part numbers for your car and a 96 or 97 Rivi.
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Old 12-18-2007, 09:40 PM   #12
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and what if its the same
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Old 12-18-2007, 09:44 PM   #13
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If it'* the same, the O2 bung will be the same.
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Old 12-18-2007, 09:47 PM   #14
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IIRC the 96 is the same but not the 97 because of diffrent connector head.


95-96 have the same connector head.
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Old 12-18-2007, 09:50 PM   #15
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oldsman my fellow riv owner will it work
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Old 12-18-2007, 09:55 PM   #16
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Well O2 sensor I am 99% sure is ok. I think a hogan downpipe would be better (Hogan performance) . Also make sure you have someone to weld it up to the rest of the exhaust.
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Old 12-18-2007, 10:47 PM   #17
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Forget it.

You're not outflowing the stocker, because you don't have the double-walled downpipe like the Series 2. The ID of your DP is already bigger than the S2.

You don't shift or rev to the higher rpm'* like the S2, and don't require the same exhaust flow because of it.

Even with ported heads, 1.8 rockers, and a buncha other stuff, I'm not outflowing my stock downpipe.

Spend your money where it counts.
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Old 12-19-2007, 07:30 AM   #18
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Some physical reasons it won't work are: Different firewall location, rear manifold exit location, and different style manifold flange.

If anything you'd be better off getting a 30 and 45* mandrel bend plus a new flange and get and exhaust shop to chop and weld it for you.

But, you already have a relatively beefy DP to begin with..
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