ZZP downpipe question.
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BRUTE FORCE
- SLE Member

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- Year and Trim: 2000 Pontiac Bonneville SSEI
ZZP downpipe question.
Hey guys, I just bought a ZZP downpipe and had it installed today. I deleted the cat and welded it to the resonator. I wanted to know if this setup will help in performance gains.
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nubuilder
- Posts like an LG3

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Re: ZZP downpipe question.
I don't have one, but it seems that the consensus is that it does help (especially the 3" on a S/C'd car). Hopefully you got a o2 simulator or had it tuned out.
Matthew

1998 Chevy K1500 Silverado Z71 ECSB L31 -- project/toy
1998 Chevy S10 ZR2 ECSB L35 5spd -- winter truck
2002 Pontiac Bonneville SSEi -- stock (trying to keep it that way...we'll see...)

1998 Chevy K1500 Silverado Z71 ECSB L31 -- project/toy
1998 Chevy S10 ZR2 ECSB L35 5spd -- winter truck
2002 Pontiac Bonneville SSEi -- stock (trying to keep it that way...we'll see...)
- nos4blood70
- Certified Bonneville Nut

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Re: ZZP downpipe question.
I am assuming it's a 3 inch. Then yes, you should free up a bit of power. You should get the front manifold to match with it.
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nubuilder
- Posts like an LG3

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- Year and Trim: 2002 SSEi
- Location: La Crosse, WI
Re: ZZP downpipe question.
Would you suggest a ported front manifold or a P-log? Does one need to worry about the crossover pipe at all?
The only reason I ask is I just wonder if it is better in the long run to just go with headers VS the cost of a DP, ported manifold(s), and possibly crossover.
The only reason I ask is I just wonder if it is better in the long run to just go with headers VS the cost of a DP, ported manifold(s), and possibly crossover.
Matthew

1998 Chevy K1500 Silverado Z71 ECSB L31 -- project/toy
1998 Chevy S10 ZR2 ECSB L35 5spd -- winter truck
2002 Pontiac Bonneville SSEi -- stock (trying to keep it that way...we'll see...)

1998 Chevy K1500 Silverado Z71 ECSB L31 -- project/toy
1998 Chevy S10 ZR2 ECSB L35 5spd -- winter truck
2002 Pontiac Bonneville SSEi -- stock (trying to keep it that way...we'll see...)
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00Beast
- Retired Site Developer

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Re: ZZP downpipe question.
Did you look at the inside of the stocker? It can't not help.
Question is: Do you feel any gains?
Question is: Do you feel any gains?
Bye Bye:

RIP sandrock

RIP sandrock
Sirius wrote:Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.
- Alpine_jake
- SLE Member

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Re: ZZP downpipe question.
you should feel a gain. i did the power log and 3 inch catless dp and it main a very noticeable gain
l67 swap; 3'DP, power log, CAI, 10.5 wires, 3.5" pulley, autolite 104s, canned tune, 180 thermo, 2 Alpine type Xs, ARC Audio XDi 2000, Big three-0/1 , couple Red Tops, alpine x303, cleared lights, custom trunk.


