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SVT Shelby GT500
O2 Heater Questions
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<blockquote data-quote="briangsxr1000" data-source="post: 16941919" data-attributes="member: 149707"><p>BJ is tuning the car. The time delay for closed loop is set for 60 seconds. Sensors are new NTK OEM sensors just with longer leads.</p><p></p><p>Problem is the PCM is not commanding 100% duty cycle when cold. I would expect to see 100% until warm and then the PCM would cut the PWM DC down to say 50% or less just to maintain heat at idle.</p></blockquote><p></p>
[QUOTE="briangsxr1000, post: 16941919, member: 149707"] BJ is tuning the car. The time delay for closed loop is set for 60 seconds. Sensors are new NTK OEM sensors just with longer leads. Problem is the PCM is not commanding 100% duty cycle when cold. I would expect to see 100% until warm and then the PCM would cut the PWM DC down to say 50% or less just to maintain heat at idle. [/QUOTE]
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O2 Heater Questions
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