I am surprised that the Data Logger didn't pick up that you need to have a crap to lessen the weight of the vehicle, it does everything else! 
TestO Datalogger - what do you think?
- Thread starter Pingu
- Start date
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- Dec 8, 2011
- Points
- 145
Air Mass
6.4
Note how the air mass follows the throttle when it is opened slowly. When the throttle is opened quickly, there is a lag. I call this the "syringe effect". If you drag a fluid into a syringe too quickly, you create a vacuum (it is actually a depression as "vacuum" has a special meaning). This is what is happening here - it is especially apparent when full throttle is rapidly applied.
This lag can be reduced by improvements to the induction side of the engine to make the air flow more freely.
5.2
The "syringe effect" is more visible here as the throttle was opened faster.
6.4
Note how the air mass follows the throttle when it is opened slowly. When the throttle is opened quickly, there is a lag. I call this the "syringe effect". If you drag a fluid into a syringe too quickly, you create a vacuum (it is actually a depression as "vacuum" has a special meaning
). This is what is happening here - it is especially apparent when full throttle is rapidly applied.This lag can be reduced by improvements to the induction side of the engine to make the air flow more freely.
5.2
The "syringe effect" is more visible here as the throttle was opened faster.
- Joined
- Dec 8, 2011
- Points
- 145
Cylinder Shut Down
6.4
All six cylinders shut down when I changed gear.
5.2
Only one cylinder shut down when I changed gear.
If a cylinder stops firing, it just acts like a compression brake (the same as putting your hand over the hole on a bike pump and trying to push the handle). Ideally, none of the cylinders would shut down during an acceleration test.
6.4
All six cylinders shut down when I changed gear.
5.2
Only one cylinder shut down when I changed gear.
If a cylinder stops firing, it just acts like a compression brake (the same as putting your hand over the hole on a bike pump and trying to push the handle). Ideally, none of the cylinders would shut down during an acceleration test.
- Joined
- Dec 8, 2011
- Points
- 145
Ignition Angle
6.4
5.2
The ECU does not know what you are going to do. It only knows what you have done. Consequently, the timing of the next spark is based on what has just happened a few milliseconds earlier. If you set the revs to 4000rpm, the ignition is fully advanced and ready for action. If you gun it from idle, the timing of the spark needs to advance - this takes time (as you can see on the 6.4 curve).
Mechanically, there are no gains to be made, but if it were a mechanical distributor, you would want the ignition to be held against the spring, so the force to move the points would be acting in your favour. As far as I am aware, electronic ignition with no moving parts just happens. The only way to improve it would be a remap.
6.4
5.2
The ECU does not know what you are going to do. It only knows what you have done. Consequently, the timing of the next spark is based on what has just happened a few milliseconds earlier. If you set the revs to 4000rpm, the ignition is fully advanced and ready for action. If you gun it from idle, the timing of the spark needs to advance - this takes time (as you can see on the 6.4 curve).
Mechanically, there are no gains to be made, but if it were a mechanical distributor, you would want the ignition to be held against the spring, so the force to move the points would be acting in your favour. As far as I am aware, electronic ignition with no moving parts just happens. The only way to improve it would be a remap.
- Joined
- Dec 8, 2011
- Points
- 145
Injection Time
6.4
5.2
The longer the injection time, the better. More fuel = bigger bang
As the engine was already running at 4000rpm before the off, the transition to max fuel was much smoother. It was injecting fuel for 2ms 5 times a second, compared to 2ms every second at idle. The mechanical parts of the injector only had to accelerate a little to get to max fuelling on the 5.2 run compared to the 6.4 run.
The engine is electronically controlled, so as long as everything is working properly, the volume of fuel should be correct for the given situation. A carburettor would need to be corrected by changing jets, etc.
6.4
5.2
The longer the injection time, the better. More fuel = bigger bang
As the engine was already running at 4000rpm before the off, the transition to max fuel was much smoother. It was injecting fuel for 2ms 5 times a second, compared to 2ms every second at idle. The mechanical parts of the injector only had to accelerate a little to get to max fuelling on the 5.2 run compared to the 6.4 run.
The engine is electronically controlled, so as long as everything is working properly, the volume of fuel should be correct for the given situation. A carburettor would need to be corrected by changing jets, etc.
- Joined
- Dec 8, 2011
- Points
- 145
Injection Time Difference
6.4
5.2
This is the difference in duration of injector open time between number 1 and number 4 cylinders.
Ideally, this difference should be minimal.
I don't think there is anything that can be done about this, other than to hope that it is as small as possible.
6.4
5.2
This is the difference in duration of injector open time between number 1 and number 4 cylinders.
Ideally, this difference should be minimal.
I don't think there is anything that can be done about this, other than to hope that it is as small as possible.
Last edited:
@Pingu May I ask a silly question? Where are you plugged into to get these results? Under the bonnet or under the steering wheel? If under the bonnet can you please show the setup as I would love to pinch your diagnostic setup and have a go and see what results I can get on my 3.0 auto. I have all the hardware and software. Cheers, mate.
This is all engine data so you can get it from either port.
- Joined
- Dec 8, 2011
- Points
- 145
I made an extension wire for my diagnostic cable and run it into the cabin from the 20-pin port under the bonnet.
Here's a video that I made "especially for you"
.Grab yourself a coffee as it's 15 minutes of the most exciting stuff on YouTube since GangNam made a cat video...
That's really inter meeting and id be keen to try it on my car.I made an extension wire for my diagnostic cable and run it into the cabin from the 20-pin port under the bonnet.
Here's a video that I made "especially for you"
Grab yourself a coffee as it's 15 minutes of the most exciting stuff on YouTube since GangNam made a cat video...
It would also be interesting to compare the differences between the engine types. The S50 doesn't pop or burble in my experience, whereas the m54 does. I wonder if that's something to do with injection timing or cylinder shut off?
- Joined
- Dec 8, 2011
- Points
- 145
If you are interested, here are the files...
http://www.porterbility.co.uk/Files/XLS/DATA.xlsm - this is the Excel file with all the macros loaded. As a security issue, you should never run a macro-enabled file from an unknown source. I could have installed an autoexec file that takes over your computer
.http://www.porterbility.co.uk/Files/XLS/DATA.xlsx - this is the same file, but with no macros.
Here are the macros. You should install them in separate modules as this makes future amendments easier.
http://www.porterbility.co.uk/Files/XLS/DATA_Module1.txt
http://www.porterbility.co.uk/Files/XLS/DATA_Module2.txt
http://www.porterbility.co.uk/Files/XLS/DATA_Module3.txt
http://www.porterbility.co.uk/Files/XLS/DATA_Module4.txt
After installing the macros in the xlsx file, save it as an xlsm file. The buttons will work automatically.
Personally, for security issues and to prevent viruses, I prefer to get macros as plain text so I can review them before installing them - but that is up to you.
Any problems, let me know.
Cheers! Got them all. It is really appreciated as getting to this level of skill in excel takes a lot of brain juice, and time!
Could do with a sticky in the knowledge base to make it easy to find in the future. A bit beyond me but like to try it mine at some point.
Bookmark it, its then easy to find when you need it.
I agree, my 66 mustang has a machanical ignition and comes on like a. Bear at anytime compared to an electronic. Also putting 271HP from a 289cu in v8. Latke slow off the line being an auto but comes to life from 200-7500 rpm! JIMIgnition Angle
6.4
5.2
The ECU does not know what you are going to do. It only knows what you have done. Consequently, the timing of the next spark is based on what has just happened a few milliseconds earlier. If you set the revs to 4000rpm, the ignition is fully advanced and ready for action. If you gun it from idle, the timing of the spark needs to advance - this takes time (as you can see on the 6.4 curve).
Mechanically, there are no gains to be made, but if it were a mechanical distributor, you would want the ignition to be held against the spring, so the force to move the points would be acting in your favour. As far as I am aware, electronic ignition with no moving parts just happens. The only way to improve it would be a remap.
You can log in any time as long as you fix it up for me! HahahaIf you are interested, here are the files... I could have installed an autoexec file that takes over your computer
I have the system working and my ecu is MS430DS0. The number seems to be in the list in the database but is in zeros and not Os. In the jobs list nothing like it appears so I can't simply and easily select a singe job file and then select the components like you did
I have a massive list of 'jobs' under MS 43.0 for M54 with EWS3. So, I select items under that and get many windows running then select Datalog and the items show in a list like yours and start running.I am now trying to find out how I can include my ECU in the list and create a single JOB like yours specific to my car which will bring up all the sensors, which I then select specific sensors like you do. It is challenging as all this is new.
I suspect that people that assisted with the development [supplying data] and the developer then manually created lost of jobs and such - not sure on that.
I am able to get meaningful some info and graphs and such but have a way to go to get the RIGHT sensors. I have printed the translations text so I can refer to that.