Scantool Diagnostic Interface Results Thread
10-28-2006, 10:14 AM
#46
Originally Posted by jimq
try "alt control prt" and paste it into word or something else
10-28-2006, 01:05 PM
#47
Three Wheelin'
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Hey guys... Try this download.... It's called Screen Grab Pro and it's freeware. I've been using it for years!
CLICK ME
Look at the upper left corner for the download.
Just load the software, double click on the icon to start it and then click F8 to active it. Then highlight what you want. When you let go it automatically saves it... Or asks you to save it. You have your choice of what file type to save as well.
I normally use Ctrl-Alt-Prt Scr to paste to Word then use Screen Grab Pro to get my pics...
CLICK ME
Look at the upper left corner for the download.
Just load the software, double click on the icon to start it and then click F8 to active it. Then highlight what you want. When you let go it automatically saves it... Or asks you to save it. You have your choice of what file type to save as well.
I normally use Ctrl-Alt-Prt Scr to paste to Word then use Screen Grab Pro to get my pics...
10-29-2006, 08:36 AM
#48
Burning Brakes
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Well my tire shop I like has a machine they say wont properly get my new tires on my wheels. Something about the combination being troublesome (porsche wheels, stiff sidewall tires, mediocre tire machine...). It wont be till monday that I get my car back pushing my data collection back a few days.
Too many things to do. Too little time.
Too many things to do. Too little time.
10-29-2006, 09:32 PM
#49
Instructor
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Here are my numbers:
1990 C4 Cabriolet, 5 speed, not turbo. Engine at operating temperature.
RPM Ignition AFM Injection
Idle 0.8 1.23 2.65
1000 5.5 1.25 2.40
2000 28.3 1.67 1.73
3000 35.8 1.96 1.95
4000 49.6 2.37 1.70
Danz C4
1990 C4 Cabriolet, 5 speed, not turbo. Engine at operating temperature.
RPM Ignition AFM Injection
Idle 0.8 1.23 2.65
1000 5.5 1.25 2.40
2000 28.3 1.67 1.73
3000 35.8 1.96 1.95
4000 49.6 2.37 1.70
Danz C4
10-30-2006, 11:48 AM
#50
RPM Ignition AFM Injection
Idle 0.8 1.23 2.65
1000 5.5 1.25 2.40
2000 28.3 1.67 1.73
3000 35.8 1.96 1.95
4000 49.6 2.37 1.70
These data are basically meaningless on a comparative basis without a true load, e.g. dyno,
and because of different chips (4000 timing - 49.6, very high & probably a performance chip).
Also, the AFM could have been re-adjusted, affecting both the AFM voltage and injector pulse
width. All it shows is that the scantool is basically working.
Bottom line: Total waste of time.
Idle 0.8 1.23 2.65
1000 5.5 1.25 2.40
2000 28.3 1.67 1.73
3000 35.8 1.96 1.95
4000 49.6 2.37 1.70
These data are basically meaningless on a comparative basis without a true load, e.g. dyno,
and because of different chips (4000 timing - 49.6, very high & probably a performance chip).
Also, the AFM could have been re-adjusted, affecting both the AFM voltage and injector pulse
width. All it shows is that the scantool is basically working.
Bottom line: Total waste of time.
10-30-2006, 12:01 PM
#51
Rennlist Member
I agree with you regarding the results under no load. Its mostly interesting to see if there is any large variance in readings and if so is the engine chipped.
How does one re-adjust the AFM? Is this a physical re-adjust or a new mapping in the chip that you are referring to?
How does one re-adjust the AFM? Is this a physical re-adjust or a new mapping in the chip that you are referring to?
10-30-2006, 01:42 PM
#52
Three Wheelin'
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Loren... You have been on record saying that the Diagnostic Interface is a total waste of time in your eyes. There are others, however, (Myself included) that view it as a very useful tool. We obviously don't have access to the technology that you do. The numbers in and of themselves may not be useful but to compare against what others show may be very interesting and useful.
10-30-2006, 02:09 PM
#53
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Useless yes, but a total waste of time, I don't think so.
I already have the satisfaction that I can make this work; I can make it work anytime I want; I can clear the airbag light after I've set it off for the second time by mistake; cost about $US30, less than 1/2 tank of gas; you guessed it, I do have a performance chip so that is valuable information right there; my data is very similar to 911Urge; both cars have a performance chip, interesting because I have the ProMax; Smokin's charting is more than we had before; and I got to spend several hours tinkering in the car. I'm an engineer, data is good...
Keep up the good work Loren, you are one of the best.
Danz C4
I already have the satisfaction that I can make this work; I can make it work anytime I want; I can clear the airbag light after I've set it off for the second time by mistake; cost about $US30, less than 1/2 tank of gas; you guessed it, I do have a performance chip so that is valuable information right there; my data is very similar to 911Urge; both cars have a performance chip, interesting because I have the ProMax; Smokin's charting is more than we had before; and I got to spend several hours tinkering in the car. I'm an engineer, data is good...
Keep up the good work Loren, you are one of the best.
Danz C4
10-30-2006, 05:45 PM
#54
Rennlist Member
The Diagnostic interface is a very useful tool for code checking and clearing mostly because the Bosch Hammer is not readily available or cost effective. No we cant bleed the ABS or other functions a Hammer can do but it provides a starting point in attempting to diagnos issues with our cars - In this respect I doubt Loren would disagree.
As for the actual values of AFM, Advance & Injector timing there is some value in comparing our readings to others. Smokin's Advance curve is more linear while others have the usual "S" curve. Thats an interesting comparison. Getting our cars (especially a C4) on a dyno is near impossible for some of us but what we are seeing here with the interface is valuable without anyone "reading into" that data to much. There is no scientific reproducibility in our readings and the engines are not under any controlled conditions or load. Values will change based upon load - thats a given and thats what I believe Loren is stating.
Everyone should spend some time reading the information at Systems Consultnig web site - its great information and they post information on AFM, Advance and Injector timing using a Porsche as an example.
Loren - Do you have similar AFM, Advance & Injector timing data on a 964 with no load? If you could post similar data for us to digest it may be of help to better understand a controlled reading to our readings.
As for the actual values of AFM, Advance & Injector timing there is some value in comparing our readings to others. Smokin's Advance curve is more linear while others have the usual "S" curve. Thats an interesting comparison. Getting our cars (especially a C4) on a dyno is near impossible for some of us but what we are seeing here with the interface is valuable without anyone "reading into" that data to much. There is no scientific reproducibility in our readings and the engines are not under any controlled conditions or load. Values will change based upon load - thats a given and thats what I believe Loren is stating.
Everyone should spend some time reading the information at Systems Consultnig web site - its great information and they post information on AFM, Advance and Injector timing using a Porsche as an example.
Loren - Do you have similar AFM, Advance & Injector timing data on a 964 with no load? If you could post similar data for us to digest it may be of help to better understand a controlled reading to our readings.
10-30-2006, 11:19 PM
#55
"How does one re-adjust the AFM?"
By adjusting the position of the internal wiper using a CO tester.
"You have been on record saying that the Diagnostic Interface is a total waste of time in your eyes"
Never said that. I think it's a great tool for all 964 owners who want to be closely involved
with maintenance. My comments related to trying to "closely" compare data results from
different cars. All the data presented is fairly close and that's about all one can really say.
To expect more from the comparative data is misleading and potentially raises unnecessary
owner concerns.
Sorry to give the wrong impression. That's the problem with emails & posts, i.e. they're always
too concise and usually misinterpreted.
"Loren - Do you have similar AFM, Advance & Injector timing data on a 964 with no load?"
Yes, I have some of that data, but avoid posting it on Rennlist because of concerns about
copyrights. Some similar data on other Porsches are found on my website on the Tests page.
If you send me an email, I'll send you the 964 data.
By adjusting the position of the internal wiper using a CO tester.
"You have been on record saying that the Diagnostic Interface is a total waste of time in your eyes"
Never said that. I think it's a great tool for all 964 owners who want to be closely involved
with maintenance. My comments related to trying to "closely" compare data results from
different cars. All the data presented is fairly close and that's about all one can really say.
To expect more from the comparative data is misleading and potentially raises unnecessary
owner concerns.
Sorry to give the wrong impression. That's the problem with emails & posts, i.e. they're always
too concise and usually misinterpreted.
"Loren - Do you have similar AFM, Advance & Injector timing data on a 964 with no load?"
Yes, I have some of that data, but avoid posting it on Rennlist because of concerns about
copyrights. Some similar data on other Porsches are found on my website on the Tests page.
If you send me an email, I'll send you the 964 data.
11-06-2006, 01:27 AM
#60
Rennlist Member
'90 C2 Results (Stock Chip)
Below are the results of my first run after getting the interface working, all taken with car stationary in garage.
Questions that came to mind during the build/test process were:
1. Has everyone had to cut the LED leads on Andy Whitacker's interface in order to get it to work? I had the same problem as others in that the voltage on the data line would only go to about 5 volts when it was supposed to be at zero. If so is there anything on the PCB that can be modified to fix this problem?
2. Is there a summary write-up of how to use the software (what should be done in what sequence, what should not be done, etc). Of course I realize that most of the functionality is just information display but things like Adaptation and Lambda Trim are relatively mysterious concepts and a summary of the use of the software in relation to these things would be useful.
I had no error codes from the DME but did have codes 22, 41 and 45 from the Climate Control Unit. I cleared these but they came back immediately.
Thanks again to DougB for all his hard work on this project!
Ciao!
Jim G.
Questions that came to mind during the build/test process were:
1. Has everyone had to cut the LED leads on Andy Whitacker's interface in order to get it to work? I had the same problem as others in that the voltage on the data line would only go to about 5 volts when it was supposed to be at zero. If so is there anything on the PCB that can be modified to fix this problem?
2. Is there a summary write-up of how to use the software (what should be done in what sequence, what should not be done, etc). Of course I realize that most of the functionality is just information display but things like Adaptation and Lambda Trim are relatively mysterious concepts and a summary of the use of the software in relation to these things would be useful.
I had no error codes from the DME but did have codes 22, 41 and 45 from the Climate Control Unit. I cleared these but they came back immediately.
Thanks again to DougB for all his hard work on this project!
Ciao!
Jim G.
Last edited by C24FUN; 02-10-2008 at 05:55 PM.
