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In the screen shot below it looks like its in seconds and the rate would be about 100Hz. in the highlighted section you can see the highlighted potion is seems to be updating the channel at that speed. Although i don't know if all channels go at that speed. Is this what you were talking about?
In the screen shot below it looks like its in seconds and the rate would be about 100Hz. in the highlighted section you can see the highlighted potion is seems to be updating the channel at that speed. Although i don't know if all channels go at that speed. Is this what you were talking about?
If this is what is being reported by your software you have a problem, as it is impossible to get 100 HZ from a J-1850 data buss on a HD ECM. The typical data rate from an HD J1850 buss is =< 2 HZ. The newer HD CAN Buss models only run between 2 - 12 HZ depending on year and Operating System software. If your seeing rates outside these levels on any HD system other than a TTS modified one, the software you are using is lying to you.
If this is what is being reported by your software you have a problem, as it is impossible to get 100 HZ from a J-1850 data buss on a HD ECM. The typical data rate from an HD J1850 buss is =< 2 HZ. The newer HD CAN Buss models only run between 2 - 12 HZ depending on year and Operating System software. If your seeing rates outside these levels on any HD system other than a TTS modified one, the software you are using is lying to you.
If this is what is being reported by your software you have a problem, as it is impossible to get 100 HZ from a J-1850 data buss on a HD ECM. The typical data rate from an HD J1850 buss is =< 2 HZ. The newer HD CAN Buss models only run between 2 - 12 HZ depending on year and Operating System software. If your seeing rates outside these levels on any HD system other than a TTS modified one, the software you are using is lying to you.
ok thankyou for clarifying. i will reach out to dyno jet about this. This is the CSV file exported directly from WinPEP8 so i will try to get clarification. Wish me luck so far getting replys from dynojet has been like pulling teeth.
In the mean time im going to go on a nice long boring ride to gather datta and check my fuel trims lol.
ok thankyou for clarifying. i will reach out to dyno jet about this. This is the CSV file exported directly from WinPEP8 so i will try to get clarification. Wish me luck so far getting replys from dynojet has been like pulling teeth.
In the mean time im going to go on a nice long boring ride to gather datta and check my fuel trims lol.
It you are converting WP8 data to .csv the units have to be configured before you export. You can export in milliseconds (or by data change) and it is customizable.
Yep, that's about right for the PV on a CAN buss system, the J-1850 is less than 2 HZ. People have to understand this when trying to review the data and understand what your being showed is just an indication of what might be going on, not what is really going on. By holding the engine steady in both RPM and Load and looking at the data over a long period of time you will begin to see a much better picture of what's really going on. Also be sure when looking at the data that your not getting the same data over and over again as that was a problem for DJ in the past. The give away is to look at the RPM data frame by frame and see if it reports the exact same thing for a number of frames, previously they did for about 12 - 13 frames of data and it is all bogus as an HD engine will never be that stable.
Yep, that's about right for the PV on a CAN buss system, the J-1850 is less than 2 HZ. People have to understand this when trying to review the data and understand what your being showed is just an indication of what might be going on, not what is really going on. By holding the engine steady in both RPM and Load and looking at the data over a long period of time you will begin to see a much better picture of what's really going on. Also be sure when looking at the data that you’re not getting the same data over and over again as that was a problem for DJ in the past. The give away is to look at the RPM data frame by frame and see if it reports the exact same thing for a number of frames, previously they did for about 12 - 13 frames of data and it is all bogus as an HD engine will never be that stable.
thanks Steve.
Would I get a better rate with a TTS? I thought the rate is governed by the ECM and the CAN bus?
07-28-2024, 06:01 AM
