I've noticed a thread or 3 lately regarding the building of ALDL cables and the gathering of data from our much loved vehicles.
I too built an ALDL cable about a week after getting my V8 VP, as I'm one of those guys who has to know how everything works. I then evaluated a few software packages designed to read the data, and found my favourite to be WinALDL as it generated a simple Tab delimited file which can be quickly and easily imported into Excel where the data can be scrutinised, compared and graphed in any manner I see fit.
Well I'm guessing there are quite a few people gathering the same sort of data, and many of you are probably wondering how your data compares to other similar vehicles. I know I am.
With this in mind, I propose a sharing of data. So I'll start the ball rolling.
In order to standardise the dataset, I propose the following data be gathered. This was recommended to me by jdd on this forum, so full credit to him.
0 to 2500 to 0
From Idle, and in neutral, steadily increase the revs to 2500 RPM over a 30 second period, and then steadily decrease the revs back down to idle over a 30 second period.
Wide Open Throttle
From idle, floor it to a bit over 100 Km and then apply the brakes in a normal manner and come to a stop.
General Driving
Record some general driving. This should include stop/start driving, maybe a bit of cruising in top gear etc... How long you wish to record this is up to you, but ideally you just want to gather a bit of data representing many different situations.
And finally, some information about your car so we know what we are comparing against.
I have attached a zip file containing 6 sample files. 3 are from my car, and the other 3 are from my dad's.
My CarDad's Car
- VP
- V8
- Auto
- Modified Chip (Unsure of specifications as it was in the car when I bought it)
Hopefully in the not too distant future everyone will have lots of interesting data to compare, and we might be able to have some good discussions regarding this valuable information..
- VP
- V6
- Auto
- Standard Chip
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I'll be in this as soon as I get myself a cable : ), great idea
Good thread greenfoam, just what I need as I'm researching ALDL statistics. Some info people might want to give is branding of particular items, if you have extractors, standard or modded exhaust, any details that are going to affect readings of WinALDL. ie. When you change the exhause to a 2.25" system, the MAP reading decreases by some 20% compared to stock, which affects overall power output, roughly how much could be determined by ALDL statistics.
Originally Posted by richie83
Hey richie83,
Good point regarding the mods, but when I started this thread I thought about that, and I'm no expert, but from what can tell, since the ALDL DataStream contains only sensor inputs, the mappings within the ECM have no bearing on the data being gathered.
So in short, I don't think any mods you do will affect the readings gathered by WinALDL.
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In my opinion, I think some mods would. Im no expert either, and no nothing about most modifications, but some of the inputs would affect readings within WinALDL, such as trim and injector flow (ie. high flow injectors/adjustable reg, extractors and exhaust (MAT and MAP readings). But to really tell you'd have to compare data of a few different mods with that of a stock standard car. Another thing I thought about is, if anyone, over a period of time, keeps data on their car, then changes or fixes something that could affect a sensor input, it would be good to have comparable data. ie In my situation, I had a stuffed oxygen sensor. I replaced the sensor, and now I get lean readings. From the data, I can tell that the injectors are running lean, hence one or some of them must be clogged or knackered. After replacing the injectors, Im going to log some more data, and compare the difference.
richie83,Originally Posted by richie83
Based on your way of thinking, Injector Flow Rates may be differerent, but I would have thought MAT & MAP would remain the same.
I think this simply highlights the fact that there is a wealth of information available to us with these types of tools, but we don't fully understand the meaning of all that is being shownto us.
That's why I started this thread. The plan is to get people thinking about & discussing this information, and with a bit of luck, when all is said and done, we will be wiser for it.
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Good idea here Chuff….
I’m not expecting a huge difference in results, even for modified cars, well at least in closed loop mode. Open loop could be a different matter.
There’s still that speed sensor issue to be solved, by my calculations I reckon it’s about a factor of 1.3 out from the RAW MPH readings. (i.e.; RAW MPH x 1.3 = True Kph).
Hey jdd,Originally Posted by jdd
Long time no hear. Hope you had a good chrissy.
Forgot to mention that. You are correct in the readings being out by a factor of 1.3, and apparently this is a know bug in WinALDL when KPH is selected over MPH in the configuration.
What I do if reference the RAW:MPH data rather than the SENSOR:SPEED data, as it correctly reads the speed of the vehicle in KPH.
This is a comparison of the WOT data from my VP. Excuse the formatting, but you should get the idea.
SENSOR:SPEED RAW:MPH
0 0
0 0
0 0
0 0
0 0
0 0
35 22
61 38
85 53
106 66
121 75
134 83
145 90
156 97
167 104
177 110
185 115
190 118
195 121
183 114
151 94
117 73
87 54
63 39
42 26
32 20
27 17
21 13
16 10
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well got the data
went for a quick 5 min drive
this the data i recived
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Hope this thread is still going?
I have just done a test with winaldl and was wondering if I have all the info?
I think I have something missing or have not set the program right.
A bit old in the tooth to be playing with this.
I have attached two zip files if anyone could tell me if it is ok!
Have no laptop just hooked up the computer from upstairs.
VP Commodore Auto.
195.000 on clock.
CAI and K&N flat bed filter
2 1/4 sports exhaust.
I need help to understand the data
20060305_125237_LOG9.zip[/ATTACH][/ATTACH]
Hey muggie,
Looks like you're getting data, but there is only a small sample. You must have had the car running for only a short time. Also, the figures seem strange. Are you sure you've selected the 127808 ECU in the winaldl configuration section?
This software is an analysis tool which enables you to see what your car's computer sees. You really need to run his software while the car is being driven in order to gather data of any use, so you'll really need a laptop.
There's other people on this board who know heaps more about this than me, and there's been a lot written up about it. Go through some of the other posts and you should learn heaps.
Here's a start.
Memcal socket install
Memcals
Basic Performance chip
Good luck.
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Hey Chuff, on the set up how many boxes do you select.
Like Raw Data, Sensor etc or the four boxes before you start.
Thanks,
muggie
Originally Posted by muggie
I select everything, then once I have the file I load it into Excel and/or Access and filter accordingly.
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Thanks Chuff, as soon as I get this laptop up and running I will try again.Originally Posted by Chuff
Muggie
Chuff, I will attach a file so you can compare.Originally Posted by muggie
Will cut out the unwanted data later and try again and see how it goes.
20060309_154939_LOG.zip
muggie
Hey muggie,
Sorry for not getting back to you sooner. Been way busy with work and all.
I'm no expert but from what I can see the data looks fine. I used WinALDL mainly to check that the sensors were reading correctly when I was having some problems my my VP.
I haven't gone into it in depth, but the program has the ability to log BLM and INT changes which is what the ECU uses in order to calibrate the fuel to meet the right A/R ratio. This is probably the bit that will help the most if you want to know what changes to make to your mappings.
There is heaps on info on this subject now, so surf this site and start learning. It's going to take some time.
Good luck.
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Hey chuff, just a few questions on winaldl. Had a run for about 20minutes around town and while I was checking I had these come up.Originally Posted by Chuff
On flag data EST mode flashes off and on.
On the flag data A/C fan request on
On the flag data set switch on
On the flag data Power Steering Power switch on
On the flag data Trans over temp on
On the flag data Park/neutral on
On the flag data Aldl mode on
On the flag data Closed loop mode on.
Have spent day's searching and can not find any reference to the above requests.
Any help would be appreciated. Have attached small file for you to have a quick look at.
mycar.zip
Muggie
Originally Posted by muggie
Hey muggie,
Ive compared some of my WinALDL data to yours and can report the following:
I get the same. Don't know why it changes.On flag data EST mode flashes off and on.
I get the same.On the flag data A/C fan request on
Don't know which one you're talking about here.On the flag data set switch on
I get the same. Indicates the power steering is noticed by the ECU. Used by BCM to control progressive steering power so that at slow speeds steering is easy and at higher speeds steering firms up.On the flag data Power Steering Power switch on
I get the same. Don't know why.On the flag data Trans over temp on
I get the same. 0 when in neutral or park, otherwise 1.On the flag data Park/neutral on
I get the same. Always true while reading ALDL data.On the flag data Aldl mode on
On & off based on whether or not the car is running in Closed Loop.On the flag data Closed loop mode on.
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chuff,
Have been searching and found this viewer for winaldl.
It seems to be ok, you just use the txt file and it shows graph.
http://www.2bluesc.com/pictures/WinA...Setup0.0-1.exe
cya
Originally Posted by muggie
Thanks Muggie,
This will come in very handy.
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Please have a look at this for me!!
Just use the cable for the first time. i dont know what I'm looking for. The car is running very ruff.
I have found a cracked header (No2) when changing the plugs and leads over the weekend. I suspect this may be a problem with idle.
Last edited by 88GreenVN; 03-01-2009 at 08:48 PM.
that is an absoloute rubbish datalog you didnt even get the car moving....Originally Posted by 88GreenVN
the only thing i can see from that log is that your fuel ratios are way way out... download a stock binary and try again and you really need a driving log to get some real idea of whats going on
im not admiring your car im looking in disgust
Sorry about that. Here is my VN's.
Where do I get a stock binary?
Last edited by 88GreenVN; 03-01-2009 at 08:48 PM.
How do you tell the fuel ratios are way way out?Originally Posted by HDT_aero