Quote:
Originally Posted by roosterk0031
Does the timing retard to heat the Cat only work during Open loop?, my Cobalt XFE most days is in open loop for only 2-3 blocks, if that's all the longer it takes for most cars it doesn't seem like the effort to spoof it.
O2 sensor doesn't care about fuel temp, only looking for free oxygen so it will adjust fuel trims regardless of fuel density.
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I'll have to turn it on and see, but I believe the answer is "no". I'm not sure what determines when it shuts off.