Quote:
Originally posted by Glen
[side note to Duke]
Thanks for the great overview of how the cat and emissions system works! To further clarify, would you say it's pointless to let the car idle vs. leaving the engine off while waiting for the test?
Thanks.
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You absolutely DO NOT want to shut the engine down prior to the start of the emission test. As a minimum let it idle. Preferably keep it revving at 2000. Also, open the windows and sunroof with the A/C on max. Anything you can to to increase engine load will increase catalyst bed temperature, and you want the catalyst bed as hot as possible to maximize it's reaction efficiency.
Duke