Help with building your Speeduino, installing it, getting it to run etc.
By emrefe
#67358
hi everyone, thanks for your helps my car now running smoothly but ı have a isue about map sensor, ı have logic analyzer and inspected what happens rpm signal spikes randomly when map sensor is pluged when ı unplug map sensor no more rpm spikes heres image of spikes sorry for bad english
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Ekran Görüntüsü (229).png
Ekran Görüntüsü (229).png (133.55 KiB) Viewed 629 times
By emrefe
#67360
jonbill wrote: Sat Mar 02, 2024 12:38 pm what do you mean by RPM signal? is that your trigger tooth signal? do you have a tuner studio data log?
I'm not at home, I'll post the log when I get home

RPM spikes randomly when idiling or driving its like 1000rpm on idle it goes 5000 and drop 1000 again
By emrefe
#67364
jonbill wrote: Sat Mar 02, 2024 6:31 pm Often rpm spikes are caused by noise on the crank signal.
But when I unplug map sensor there is no spikes any where why map cause spikes, i cant understand and i tried agresive triger tooth mod it helps a bit on idle but car not starts anymore thanks for help btw and One more question can ı stop noise with ferrit core or ferrit wheel?
By FiatDuino
#67365
What is the exact part number of the MAP sensor? Denso 079800-????

I believe that the calibration of the MAP sensor used in the tune may be incorrect. When you have the key ON and the engine OFF, the MAP sensor should be around 100 kPa (depending on the elevation above sea level where you are located).

The previous data log that was posted (google drive) has a MAP of 180 kPa which is not reasonable.

The sensor is likely a one-bar or maybe a two-bar with a max reading of 100 kPa or 200 kPa. The part number will help track down what range the sensor has.
By emrefe
#67374
FiatDuino wrote: Sat Mar 02, 2024 7:25 pm What is the exact part number of the MAP sensor? Denso 079800-????

I believe that the calibration of the MAP sensor used in the tune may be incorrect. When you have the key ON and the engine OFF, the MAP sensor should be around 100 kPa (depending on the elevation above sea level where you are located).

The previous data log that was posted (google drive) has a MAP of 180 kPa which is not reasonable.

The sensor is likely a one-bar or maybe a two-bar with a max reading of 100 kPa or 200 kPa. The part number will help track down what range the sensor has.
i fixed that map over 100kpa problem heres log and tune sorry for late upload
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By PSIG
#67383
Tooth log, with spike if possible.

I see some settings in TS that are potentially confusing for Speeduino. Perhaps zero or disable as much as possible to focus on basic function at this point, e.g., dual tables, narrow-band simple O2, accurate calibrations, etc. The crank sensor signal should be stable enough to use no or minimum signal filtering if possible. Begin switching advanced functions on and tuning them as the system is shown stable and responsive.

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