Quote:
Originally Posted by psalt
the "default" mode should be too rich
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On a car equipped with a cat, this could lead to a significant problem. Run raw fuel through a cat and the temperature can go way up. Melting the cat internals is a possibility and setting things on fire might happen, in an extreme case. Ferrari used to use 2 separate ignition systems on their V8 engines, each responsible for 4 cylinders. Every once in a while, one of these would fail and all the unburned fuel from that half of the engine did really bad things when it got to the cat...
JR