Could someone with experience reading datalog files take a look at my file and tell if something is way out of whack.
Thanks,
Ray
Thanks,
Ray
CK5
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datalogg file
- Thread starter RAY
- Start date
File has an error when I try to open it (the spreadsheet, not the .zip). 
Not sure if it's my computer or not, but I don't have problems with other spreadsheets.
Not sure if it's my computer or not, but I don't have problems with other spreadsheets.
File has an error when I try to open it (the spreadsheet, not the .zip).
Not sure if it's my computer or not, but I don't have problems with other spreadsheets.
Same here, not a recognized file.
Other file didn't work, but I know why now. .xdl is the file format that TunerPro uses. That won't work with Excel.
After you record the data and save it, you need to click "acquisition" then "export log file" and export it into a .csv (think thats it). The .csv log file should open with excel then.
If you find a shorter route to do it, let me know, but that's how I've always done it, since I like working in excel. Not necessary to convert if you are playing the data back with tunerpro.
After you record the data and save it, you need to click "acquisition" then "export log file" and export it into a .csv (think thats it). The .csv log file should open with excel then.
If you find a shorter route to do it, let me know, but that's how I've always done it, since I like working in excel. Not necessary to convert if you are playing the data back with tunerpro.
Ok, lets try this again. Could someone please review this file?
Thanks,
Ray
Thanks,
Ray
Last edited:
Are you running a neutral start switch? I'm guessing no, since it's indicating "drive" when engine RPM's climb a fair bit? That will probably skew some of what the readings are, although I will readily admit I'm not very experienced with TBI or injected applications running an automatic.
What I see is that it wants to go lean (not is lean, difference) when you stab the throttle. But assuming this is in neutral, engine load is minimal, so not a large concern.
You'd get more useful information if you went out and cruised around at part throttle, recording all the time. Idle is notoriously difficult to tune for, as smell or O2 readings may not reflect what is really going on. The way I tune for part throttle (right or wrong) is watch the BLM's. If BLM's hit 160, not a good idea to keep pushing it at that point. 160 means it's maxed out for fuel adjustment, and the engine is physically running lean at that point, which can and will damage the engine eventually.
Moving over to heavy throttle, without a wideband O2, and with the TBI slow refresh rate of ~1 second, it's pretty hard to effectively tune for power (cruise is easy, as it stays in closed loop and tries to compensate for fuel, you tune for 128 as best you can there, which leaves a large margin of fueling adjustment for the ECM). All you can do there without a wideband is make a pull long enough to grab a couple of data points, and watch O2 voltage during that period of time, to see if the O2 sensor is reading lean or rich. Realistically you want this as your "worst case"...you might hit 150 BLM's while cruising up hill X unloaded, but if you throw a trailer on, what used to be 150 may now be 160.
What I see is that it wants to go lean (not is lean, difference) when you stab the throttle. But assuming this is in neutral, engine load is minimal, so not a large concern.
You'd get more useful information if you went out and cruised around at part throttle, recording all the time. Idle is notoriously difficult to tune for, as smell or O2 readings may not reflect what is really going on. The way I tune for part throttle (right or wrong) is watch the BLM's. If BLM's hit 160, not a good idea to keep pushing it at that point. 160 means it's maxed out for fuel adjustment, and the engine is physically running lean at that point, which can and will damage the engine eventually.
Moving over to heavy throttle, without a wideband O2, and with the TBI slow refresh rate of ~1 second, it's pretty hard to effectively tune for power (cruise is easy, as it stays in closed loop and tries to compensate for fuel, you tune for 128 as best you can there, which leaves a large margin of fueling adjustment for the ECM). All you can do there without a wideband is make a pull long enough to grab a couple of data points, and watch O2 voltage during that period of time, to see if the O2 sensor is reading lean or rich. Realistically you want this as your "worst case"...you might hit 150 BLM's while cruising up hill X unloaded, but if you throw a trailer on, what used to be 150 may now be 160.
