Need some comment on noisy CLT signal
#4
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I haven't done anything to the stock ground points. I will try cleaning them all. I also have low-z injectors running on MS-2, I am afraid that the noise is from the injector flyback dampening circuit.
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That's how mine look. It's jumping up and down what <1°? The resolution with MS-II is pretty rubust. With a range of -40°F to +257°F vs. -40°F to 215°F, I noticed the same thing when I upgraded to MS-II, it seem to read the sensor and updates faster than before with a more accurate real-time display of the values it's reading.
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That's how mine look. It's jumping up and down what <1°? The resolution with MS-II is pretty rubust. With a range of -40°F to +257°F vs. -40°F to 215°F, I noticed the same thing when I upgraded to MS-II, it seem to read the sensor and updates faster than before with a more accurate real-time display of the values it's reading.
Thanks.
-Raj
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Judging by your min/mac values in your log, those spikes look to be at most +/-2°. I wouldn't worry about it. The ADC values that it's reading from the sensor are more minute (adj.), I haven't changed a thing, setup wise, and noticed the same CLT and MAT "spikes" as you are seeing from upgrading from MS-I to MS-II.
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Judging by your min/mac values in your log, those spikes look to be at most +/-2°. I wouldn't worry about it. The ADC values that it's reading from the sensor are more minute (adj.), I haven't changed a thing, setup wise, and noticed the same CLT and MAT "spikes" as you are seeing from upgrading from MS-I to MS-II.
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pull down "calculated fields"
select "Field Min and Max"
type in the field name EXACTLY as it is in the left side selection (spaces, quotes, symbols, etc)
type in a minimum value
type in a maximum value
hit OK and watch your graphs rescale to something useful.
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Does my process sound right?
-Raj
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I am not sure why. I think that it might be too rich at idle. I wanted to set the VE using the wide band and then play with the idle air screw to set the idle rpm with the idle value closed. Then I will play with closed loop idle.
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Gochya. I didn't know if you had intentionally set idle that high, or if you had a known vac leak or something.
You might want to run through this thread to help get up to speed on working with closed loop idle
Megasquirt MSEXTRA and MS3EFI • View topic - Closed loop IAC control: Documentation
Obviously we don't know where your fueling is, but lean conditions actually tend to result in a higher idle, and typically uneven. Your idle is good and even, it's just high. You should be able to idle at 900 rpm, around 14:1, pretty smoothly--once you start nailing it in.
You might want to run through this thread to help get up to speed on working with closed loop idle
Megasquirt MSEXTRA and MS3EFI • View topic - Closed loop IAC control: Documentation
Obviously we don't know where your fueling is, but lean conditions actually tend to result in a higher idle, and typically uneven. Your idle is good and even, it's just high. You should be able to idle at 900 rpm, around 14:1, pretty smoothly--once you start nailing it in.
#16
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Ok. Got the wideband O2 working. I couldn't get the MSQ that I put together to work. So, I started form a fresh DIY's 94-95 MSQ and changed the settings to fit my setup (550cc low Z injectors and different fan port). This seems like a good starting point. The car idles at 1200 RPM and the AFR is OK at idle.
My TPS signal is oscillating a little (Between 0% and 1%). Any amount of calibration doesn't seem to fix it. This in turn triggers TPS accel enrichment at idle and the car stumbles a little. It idles OK when I switch off accel enrichment.
I will try to setup the MAP and TPS based accel enrichment later today or tomorrow. In the mean time I want to setup closed loop idle. I am going to read the document Ben posted and follow it.
Can anyone post what the valve frequency should be for the idling valve on a 1.6L throttle body? Mine is a 1.8 swapped car with the original throttle body.
Thanks.
-Raj
My TPS signal is oscillating a little (Between 0% and 1%). Any amount of calibration doesn't seem to fix it. This in turn triggers TPS accel enrichment at idle and the car stumbles a little. It idles OK when I switch off accel enrichment.
I will try to setup the MAP and TPS based accel enrichment later today or tomorrow. In the mean time I want to setup closed loop idle. I am going to read the document Ben posted and follow it.
Can anyone post what the valve frequency should be for the idling valve on a 1.6L throttle body? Mine is a 1.8 swapped car with the original throttle body.
Thanks.
-Raj
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Ok. Got the wideband O2 working. I couldn't get the MSQ that I put together to work. So, I started form a fresh DIY's 94-95 MSQ and changed the settings to fit my setup (550cc low Z injectors and different fan port). This seems like a good starting point. The car idles at 1200 RPM and the AFR is OK at idle.
My TPS signal is oscillating a little (Between 0% and 1%). Any amount of calibration doesn't seem to fix it. This in turn triggers TPS accel enrichment at idle and the car stumbles a little. It idles OK when I switch off accel enrichment.
My TPS signal is oscillating a little (Between 0% and 1%). Any amount of calibration doesn't seem to fix it. This in turn triggers TPS accel enrichment at idle and the car stumbles a little. It idles OK when I switch off accel enrichment.
Set your "off" TPS ADC value so it's a few points above to set point you actually measure. You should make the WOT setpoint a few points lower than the actual as well. This should filter out some of the error.
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