Guru Map data log example.....
09-05-2003, 01:32 PM
#1
Drifting
Thread Starter
Join Date: Jun 2001
Location: Yakima,WA / Kaohsiung,TW
Posts: 2,513
Likes: 0
Received 0 Likes
on
0 Posts
Guru Map data log example.....
I got my SerialLink adapter the other day and did a few runs to dial in my AFM and this thing kicks ***!!!
It comes with a simple DOS program that polls the MAP LINK and spits out a text file that you can import into Excell and then do some formulas to convert some of the info into usable numbers. Within 2 runs I've got my entire RPM range dialed in for WOT. Easy as hell!!
If someone could host the excell sheet for me we can show it (for some reason my ftp site won't let me in today).
I strongly recommend anyone with a map kit get this!! I know the O2 sensor is not as accurate as a wide band but, within a data log you can get the full resolution in a form thats usefull.
Thanks
Jason
It comes with a simple DOS program that polls the MAP LINK and spits out a text file that you can import into Excell and then do some formulas to convert some of the info into usable numbers. Within 2 runs I've got my entire RPM range dialed in for WOT. Easy as hell!!
If someone could host the excell sheet for me we can show it (for some reason my ftp site won't let me in today).
I strongly recommend anyone with a map kit get this!! I know the O2 sensor is not as accurate as a wide band but, within a data log you can get the full resolution in a form thats usefull.
Thanks
Jason
09-05-2003, 03:29 PM
#4
Former Sponsor
09-05-2003, 06:54 PM
#6
Racer
Join Date: Aug 2003
Location: South Florida
Posts: 494
Likes: 0
Received 0 Likes
on
0 Posts
Bless you.
I just got my serial link too this week although I haven't had an opportunity to use it (steady rain here in Florida). How did you set it up (the program) Is it self explaining? Any insight, I'd greatly appreciate. My learning curve looks more like President's Blush job rating than a true bell curve.
What is it that we have to look at and adjust for? Is it the OXY column? From about 934 through to 2934 in 1st (zone 305-410; 520-735) is this indicating a lean condition- if so what percentage did you use to increase for fuel? Was it a trial fail?
How is your transition from off to on boost? Is it smooth or is the car ”holding back” some?
Is 44k -45k the threshold of boost?
Thanks for your insight.
I just got my serial link too this week although I haven't had an opportunity to use it (steady rain here in Florida). How did you set it up (the program) Is it self explaining? Any insight, I'd greatly appreciate. My learning curve looks more like President's Blush job rating than a true bell curve.
What is it that we have to look at and adjust for? Is it the OXY column? From about 934 through to 2934 in 1st (zone 305-410; 520-735) is this indicating a lean condition- if so what percentage did you use to increase for fuel? Was it a trial fail?
How is your transition from off to on boost? Is it smooth or is the car ”holding back” some?
Is 44k -45k the threshold of boost?
Thanks for your insight.
Last edited by ewainwright; 09-05-2003 at 07:32 PM.
09-05-2003, 07:32 PM
#7
Drifting
Thread Starter
Join Date: Jun 2001
Location: Yakima,WA / Kaohsiung,TW
Posts: 2,513
Likes: 0
Received 0 Likes
on
0 Posts
ewainwright,
The CommLink software is easy:
Hook a serial cable to your computer and SL.
Warm up car.
Choose the com1 port.
Set it for 1200 baud (use "q" and "a" to scrool up/down)
Restart your car.
hit "F2" to start datalog
hit "y" for yes
name your file (with a .txt extention)
hit enter.
Do spirited run.
slow down!!
hit "F3" to stop recording
hit "Y" for yes
Your done with the process.
Now open Excel.
"open file"
Find your *.txt file
Go through the wizard to import the text file into a excel file.
Copy your results and paste into my example to get the forumulas that convert MAP into MAP ZONE, MAP into PSI, and OXY into Scaled AFM.
Or you can use John Kaufmann's formulas for MAP ZONE and PSI:
=100*INT(H2/16)+5*MOD(H2,16)
=(B2-101)*14.5/100
and then mine for scaled afm:
=(D2*-0.0469)+16.344
As far as tuning goes:
You want about a 12.5 in the "SCALED AFM" column or a 85 in the "AFM" column. as long as your not above 14(lean) you more or less safe, but shoot for 12.5.
I worked in 5% steps for adjusting, it seem that 5%=1.0 scaled afm point(approx) but that all depends on your car a should be used as a starting point only.
If you need any more help send me an email.
HTH
Jason
The CommLink software is easy:
Hook a serial cable to your computer and SL.
Warm up car.
Choose the com1 port.
Set it for 1200 baud (use "q" and "a" to scrool up/down)
Restart your car.
hit "F2" to start datalog
hit "y" for yes
name your file (with a .txt extention)
hit enter.
Do spirited run.
slow down!!
hit "F3" to stop recording
hit "Y" for yes
Your done with the process.
Now open Excel.
"open file"
Find your *.txt file
Go through the wizard to import the text file into a excel file.
Copy your results and paste into my example to get the forumulas that convert MAP into MAP ZONE, MAP into PSI, and OXY into Scaled AFM.
Or you can use John Kaufmann's formulas for MAP ZONE and PSI:
=100*INT(H2/16)+5*MOD(H2,16)
=(B2-101)*14.5/100
and then mine for scaled afm:
=(D2*-0.0469)+16.344
As far as tuning goes:
You want about a 12.5 in the "SCALED AFM" column or a 85 in the "AFM" column. as long as your not above 14(lean) you more or less safe, but shoot for 12.5.
I worked in 5% steps for adjusting, it seem that 5%=1.0 scaled afm point(approx) but that all depends on your car a should be used as a starting point only.
If you need any more help send me an email.
HTH
Jason
