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EGT over A/F?
Posted: Sun May 02, 2004 10:42 am
by BAC5.2
Why?
EGT reacts slower, so by the time you know something is wrong, things are already going on, right?
Why is the EGT a better gauge to have?
Posted: Sun May 02, 2004 4:30 pm
by vrg3
High EGTs can happen even if you think you're running a good mixture, and can still be dangerous.
They're not really alternatives to one another. It's good to know both the air/fuel ratio so you can quantify what your tuning is doing, and the exhaust gas temperature because it's an indication of combustion temperature..
(I presume you're talking about a proper wideband air/fuel ratio gauge, not the little 10-LED dealies, which are of very little use.)
Oh, and also, if you get a good unshielded probe EGT readings don't lag very much at all. The probe won't last that long, but it will work well.