Quote:
Originally Posted by Christ
Back to the original topic that you brought back from I'm not sure how long ago - Yes, it's very possible to tune a vehicle to reach emissions standards without the use of a catalytic converter, even with computer controlled "emissions conscious" vehicles. It does, however, require the full ability to tune the fuel/ignition curves, among other things (hardware tuning) based on exhaust gas analysis rather than desired power output.
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They would probably still put in a cat, if for no other reason than it could provide a safety net should the rest of the system drift out of tune.