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Catless Headers

Discussion in '7th Generation Honda Civic (2001-2005)' started by Luke_Green, Sep 11, 2017.

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  1. Luke_Green

    Luke_Green Respected

    Jul 24, 2017
    New York
    I have an 05 civic and one of my friends just parted out his civic and I got some no name brand Catless headers. They have the two spots to put 02 sensors in. I know that I will throw a check engine light thats fine I have until next july for inspection but if I run catless headers I heard my car will run lean. Will this mess up my motor with no tune? also besides sound will it have any horse power gains without a tune?
  2. Mr.Baker

    Mr.Baker Mr. Search Registered VIP 5+ Year Member

    Jul 19, 2011
    Fingerlakes Region, NY
    You have more than one?

    For this reason, PASS.

    Save your time (& money) on something more worthwhile, like watching paint dry.
    The 7th gen isn't a great platform to build from with simple bolt ons, and your "no name catless header" isn't going to do much of anything except be obnoxious.


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