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Thread: Drilling my catalytic converter?

  1. #26
    3Geez Veteran MessyHonda's Avatar
    Join Date
    Feb 2006
    Vehicle
    89 LX-i(5speed)
    Location
    Bay Area
    Posts
    22,201

    Re: Drilling my catalytic converter?

    most of the bolts are rusted by now

    1989 Honda Accord LX-i
    B18c1 swap since 7/2011
    175whp and 132tq
    Redzone tuned



  2. #27
    3Geez Veteran lostforawhile's Avatar
    Join Date
    Dec 2002
    Vehicle
    86 hatchback, 1990 Lincoln Towncar
    Location
    nowhere GA
    Posts
    15,401

    Re: Drilling my catalytic converter?

    the only reason fuel use would go up after taking off a cat is increased air flow through the system, this means the engine is making some extra power, if it's restricted enough to be blocking airflow, something isn't right, after 25 years the stock converter is probably partly clogged anyway, if you want a converter and don't live in cali, get an aftermarket high flow one.

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