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Thread: Illinois emissions on engine swaps???

  1. #1
    Join Date
    Jun 2004
    Location
    Tigard, 0r
    Posts
    382
    My Cars
    99' 357Ls - 87' 335is

    Illinois emissions on engine swaps???

    I'm moving to Chicago soon and trying to understand how strict emissions laws are in Lake and Cook counties. I've got a m30 swapped e30 and a LS swapped e36. Will I be able to register and drive these cars there?

    Thanks for you help!

  2. #2
    Join Date
    Sep 2006
    Location
    NW suburban Chicago
    Posts
    12,862
    My Cars
    hiss by my window
    The E30 is exempt. Only OBDII and later need testing.
    The '99 will get whistled in.
    No sniffers or inspection in Ill, only interrogation of the DME. If MIL is off and monitors ready your are good to go. I believe 2 monitors not ready is allowed, perhaps specific ones.
    https://www2.illinois.gov/services/I...icle-emissions

    If you can leave two black stripes from the exit of one corner to the braking zone of the next, you have enough horsepower. - Mark Donohue

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