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  1. #1

    Installing R&D Extender with 02 sensor

    I'm adding the R&D Exhaust Extender to my 08 RXTx. Should the inner pipe be drilled out under the 02 sensor? If the 02 sensor is not in the stream the readings are not going to be accurate for the Autotune. What have others done with this? R&D has no instructions and are only open 4 days a week. First pic shows the inner pipe. The second is with the extender over it and the positioning of the 02 sensor.
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  2. #2
    boost junkie skidoochris's Avatar
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    throw it in the trash and drill and tap the damn manifold

  3. #3
    Care to elaborate a little as to why? So what is wrong with the extender and introducing an 02 sensor there?

  4. #4
    boost junkie skidoochris's Avatar
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    first as you found out it will not work correctly with out a mani mod
    second the thing gets so f-ing hot, its like a heater in the hull
    yes, tapping the mani is a pain in the ars, but its the best way to do it
    if you would have asked on here you could have picked one of those pos for pennies

  5. #5
    Well tried using site search first and you cant find crap that way. Of course now I do a google search to find threads in Greenhulk and stuff comes up. Crap and I just had the damn motor out. And I have a spacer on the manifold to make it more fun. ugghhh.
    Last edited by viperbob; 04-11-2015 at 05:50 PM.

  6. #6
    Aussiepauly's Avatar
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    Yep he is right mate piece of garbage chuck it tap the mani

  7. #7
    Manifold off. just have to wait till Monday for the proper size drill bit

  8. #8
    Boost addict hotbird's Avatar
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    Total garbage. The flange is weak and doesn't seal. Exhaust leak big time!

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  9. #9
    Boost addict hotbird's Avatar
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  10. #10
    Even though it seems a few people were able to get the extender to work, I decided to do as most other have done and redo the exhaust manifold. After getting proper drill bit it was easy. Of course having a couple milling machines was an important part of the job..
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