Thanks for posting your conclusions and I'm glad you found my logs of some use.
When you make it back, I'm in Moore. I'd really like to get a look at your MKII.
soldered mine.
these links are for the hks safr, but maybe you can get some information helpful for the afc.
HKS S-AFR installation
http://www.supramania.com/forums/showthread.php?t=5485
MKIII - SAFR Gain Adjustment worksheet
http://www.supramania.com/forums/showthread.php?t=7877
I've tweaked it even more. Now you only need to input two things.
1. RPM range to tune
2. Target A/F
Paste your datalog .csv file into the 'datalog' sheet in the workbook.
Data should be no higher than row 4.
Make sure AFR is in column B and RPM is in column C.
It will automatically...
Thanks Dan. I hope it can be useful on the safc also. If you need to tweak it any, the password, to make design changes, is isnms.
edit: made a couple of cosmetic changes only since I first posted it.
Thank you.
I don't know how it will work with and safc. I think they have a Hi and Lo and I don't know how the settings are adjusted.
I configured this worksheet to calculate for the hks s-afr.
Let me know if it works with the safc.
Current version on post #13
The SAFR has 11 selectable set points.
We only need to adjust ~3500rpm and above.
I've made a simple Excel worksheet to calculate the gain adjustment for the rpm range desired.
Must have: Tools > Add-Ins > Analysis ToolPak enabled in Excel
Input three things...
how about the rpm range?
I have seen don't tune below 3000 since the ecu is still controlling things.
I have also seen don't tune below 3500.
But I have also seen in my data logs that the ecu is still able to maintain ~12.5 to 4000rpm.
which is it?
3000
3500
4000
what gear do you use?
I know you want to get a good picture of ~3000 to 6200rpm.
If you're using 4th, you're going to be zipping along pretty fast by the time you get to redline.
Dan
To guys like us who want a reliable daily driver, top end and high hp take a back seat.
Reality - Who is going to be driving through the neighborhood at 20psi and 120 mph and if you're doing that on the interstate your putting yourself and everyone around you at risk. Just a blink of...
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