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headers or cats

This is a discussion on headers or cats within the External Engine forums, part of the LSx Technical Help Section category; my o1 z-car doesnt seem to run right and a code of O2 sensor on bank 1 is bad its ...

  1. #1
    Junior Member niterunnr's Avatar
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    Jun 2008
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    chickasha oklahoma
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    white
    01 Z-28

    headers or cats

    my o1 z-car doesnt seem to run right and a code of O2 sensor on bank 1 is bad its 70 bucks for a new one but was lookin at adding headers and true dual exhaust...anyone think this will work.... also what is the best exhaust for this car single in dual out or true duals...has flowmaster on it now but dont sound right.... lookin at borla thanks for any info

  2. #2
    Exalted Cyclops 67CamaroRSSS's Avatar
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    2002 Z28 A4 NBM
    Sadly now demodded :(

    FYI: All this is done to the 2002. The 1998 is bone stock.

    I run QTP stainless steel long tubes with only the front O2 sensors. I have no cats, no AIR and I programmed out the rear O2 sensors. The headers run into a 2-1/2" true dual setup with an X-pipe and a pair of Magnaflow mufflers dumped at the axle. I also have a Volant CAI. All this netted me 343rwhp/357rwt after a dyno tune. I also put 3.73 gears in it. Next up is a 3400 stall that I've purchased but haven't installed.

    BTW: I can do this as there is no visual or tail pipe inspection where I'm at. They plug in and if the comp passes (no codes) and the gas cap holds vacuum you're good to go.

  3. #3
    Ricekiller z28punk's Avatar
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    Pewter
    2002 Camaro Z28

    Quote Originally Posted by niterunnr View Post
    my o1 z-car doesnt seem to run right and a code of O2 sensor on bank 1 is bad its 70 bucks for a new one but was lookin at adding headers and true dual exhaust...anyone think this will work.... also what is the best exhaust for this car single in dual out or true duals...has flowmaster on it now but dont sound right.... lookin at borla thanks for any info
    I love my flowmaster I got on mine. I will be adding a cutout since the flowmaster doesnt add any horsepower, but it sounds good.

    I personally have heard single exhaust LS1's sound good and I have heard true duals sounds good. its all in what combination u run. go listen to some sound clips of exhaust and u will find what u want. I like borla stingers myself.

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