LC-1 Response and Autotune

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Old 07-25-2009, 12:49 PM
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Default LC-1 Response and Autotune

I noticed my LC-1 response time is set to "instant" and AFR's are always bouncing. It's hard to tune by hand a single cell on the map since the AFR is constantly moving up and down with the exhaust pulses.

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Maybe slowing down the response speed on the LC-1 can make autotune to work better.

any thoughts?
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Old 07-25-2009, 06:14 PM
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do you have it wired in via serial or analog?
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Old 07-25-2009, 06:21 PM
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Originally Posted by 18psi
do you have it wired in via serial or analog?
serial.

Does the serial output use the same setting as the analogs?
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Old 07-25-2009, 07:16 PM
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HOw much is it bouncing? I would imagine at idle there might be some of that, but at 2000-3000 it should be steady within a +/-.1
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Old 07-25-2009, 07:27 PM
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+- 0.8 at idle, boost, cruise (very fast oscillation)

Maybe I'm the only one with this problem. I purchased a replacement v-band clamp for my downpipe to be sure that is not an exhaust leak.
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Old 07-25-2009, 07:41 PM
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Originally Posted by ismael_pt
+- 0.8 at idle, boost, cruise (very fast oscillation)

Maybe I'm the only one with this problem. I purchased a replacement v-band clamp for my downpipe to be sure that is not an exhaust leak.
you are DEFINITELY not the only one with this problem. mine does the same thing. Sometimes it runs great with no bouncing, sometimes its like crazy
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Old 07-25-2009, 07:48 PM
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... I've never had this before. I wonder whats different?? You could try setting the sampling back a little bit to average it, but you may sample it when its on the low side.
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