NEED ADVICE (06 wrx) buying new turbo back exhaust
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This is a discussion on NEED ADVICE (06 wrx) buying new turbo back exhaust within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; I'm open to all manufacturers, catted or straight pipe? Cons for Catless: WA state has emission standards that would force ...

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    NEED ADVICE (06 wrx) buying new turbo back exhaust

    I'm open to all manufacturers, catted or straight pipe? Cons for Catless: WA state has emission standards that would force me to put a cat it every two years to pass emissions. 02 sensors would trip the check engine light so i would have to get those mock 02 sensors or would a cobb access port do the job? Or an after market ECU? If I were to go with a high performance catted system, what are some of my best options. Quick question about a down pipe, what's the difference and advantage of a "divorced waste gate" as opposed to a "bell Mouth" downpipe. That comparison is referring to the invidia down pipes. Correct me if my info is wrong. Thanks
    Last edited by HEIFSHAFFWRX; 01-18-2014 at 01:25 PM.

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    Honestly, if they do not directly check for cats then you should be fine with o2 sensors and a good tune that eliminate CEL's. I bought a wrx not to long ago from a guy in vancouver and he had a custom turbo back exhaust made by PRE, 1 piece all the way back and it has no cats and it passed the DEQ. As long as the o2 sensors are working and that there is no CEL, you should be fine.

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    and I had to get it registered under my name here in Oregon and it passed as well. No cats.

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    Registered User Chief_WRX's Avatar
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    If you have emissions, make your life easier and get a catted downpipe.

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