Catted Mac Hpipe+Emission

Discussion in 'The Garage' started by Twista, Mar 7, 2006.

  1. Twista

    Twista Legend

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    Would this setup most likly pass a emission test? My car has 6 cats on it normally and this midpipe woould only have 2 cats. Anyone else running this midpipe and passing emission with no problems?

    thanks
     
  2. Matt94GT

    Matt94GT Legend SN95 Supporter Retired Staff

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    do you run stock cats, smog, and rest of your emmissions still?
     
  3. Twista

    Twista Legend

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    my car is 100% stock right now (97 gt) I want to get a MAC catted H pipe and flowmasters, but i wanna stay emission legal.
     
  4. Matt94GT

    Matt94GT Legend SN95 Supporter Retired Staff

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    It all depends on your state, I have heard of ppl passing with it before...
     
  5. 94gtstang50

    94gtstang50 Well-Known Member

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    6 cats? What kind of car do you have? My 94 has two cats and two resonators on the stock h-pipe. As far as passing inspection with the mac catted H, just run low ocatne and I heard something about two bottles of iso heet helping to get the car running a little leaner and cleaner. Where are you from, b/c some states will not pass you with an aftermarket cat, New Jersey is one example of that.
     
  6. Lightning Struck

    Lightning Struck Legend

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    I was wondering about the 6 cats also ???
     
  7. Twista

    Twista Legend

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    well ..
    mine has 4 cats and 2 resonators? whatever a resonator is lol. Im from illinois btw.
    [​IMG]
     
  8. 94gtstang50

    94gtstang50 Well-Known Member

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    The first "things" after the exhaust mainfold should be the resonators, and the other four are the cats. Not sure about how strict they are in illinois though.
     
  9. Matt94GT

    Matt94GT Legend SN95 Supporter Retired Staff

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    I have heard ppl saying their stangs had 6 'cats' before not the first time.
     
  10. 94gtstang50

    94gtstang50 Well-Known Member

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    the first two things were empty on my stock h and I was told that they were resonator pipes. They have some sort of weird engineering purpose.
     
  11. Lightning Struck

    Lightning Struck Legend

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    Yea to hamper the exhaust note and hp :mad:
     
  12. NITROUSINJECTED

    NITROUSINJECTED Active Member

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    if you are worried about getting caught buy the police just gut your cats out pretty easy to do
     
  13. 95CALI-5.0

    95CALI-5.0 Active Member

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    With an aftermarket catted H-Pipe in CA you may pass the sniffer test :dancing6: but will fail the visual. :police:
     
  14. 94gtstang50

    94gtstang50 Well-Known Member

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    I gutted my cats last week (they were clogged b/c of a rich a/f mixture) and have inspection this week, any tips on how to pass the sniffer?
     
  15. STNG_96

    STNG_96 Active Member

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    I cant even count how many times this has been said on this entire site. 96-98 cars came with SIX, once again, SIX cats, and 94-95 cars came with FOUR, count them, FOUR cats. And as previously stated, whether or not yo0u pass will depend on what state you live in.