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  1. #1
    Registered User
    Join Date
    Apr 2013
    Location
    philadelphia, pa
    Posts
    8

    03si cat vs. 08si cat

    hi can anyone tell me if a stock 08si works with the ep3. i called honda and they have different part #s and the guy was not able to tell me if it's interchangeable. thanks in advance.

  2. #2
    Registered User captaingamez's Avatar
    Join Date
    Jan 2010
    Location
    Chandler, AZ
    Posts
    556
    nope, fitment is totally different, i know this because i tried to mount a test pipe from an 06-11 in my 02 and it is too short by about 2 inches.

  3. #3
    Registered User Blah1219's Avatar
    Join Date
    May 2008
    Location
    Lubbock, TX
    Posts
    642
    It's a no go. Even if you had the stock k20z3 exhaust mani, you would still be out of luck. Also all the 8th gen race headers don't work out with our 7th gens.

  4. #4
    Registered User
    Join Date
    Apr 2013
    Location
    philadelphia, pa
    Posts
    8
    ok, thanks for the replied... any other solutions for a P042 code? i know they sell after market cats for about 200$ is that a good route. because i cant see myself picking one up from the dealer for over 1000$. or should i keep looking for a used one that from an ep3? thanks again.

  5. #5
    Since 03 Baby! ImportCustomx's Avatar
    Join Date
    Feb 2004
    Location
    Peoples Republic of Massachusetts
    Posts
    782
    Check on ebay, they have oem ones on there
    be jealous :P

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