Saturday, May 31, 2008

Moving to the next step

I've not flashed "20080530_OL9.hex" to my car yet but since the scaling results looks quite reliable, I'm going to move to the next step in my OL scaling. For those who have forgotten, the steps are:

1. Closed loop range between idle and 60 g/s.
2. Open loop low range using WBO2 and 5th gear logs with about 50% to 70% throttle and WGDC = 0.
3. Open loop middle range using WBO2 and 3rd gear WOT logs and WGDC = 0.
4. Open loop high range using WBO2 and 3rd gear WOT logs with normal WGDC and normal boost levels. For this, I change the arbitrary AFR target to 10.5 to be conservative since MAF is unknown.
5. Change AFR table back to real targets and then make fine adjustments to AFR targets to hit correct AFR based upon rpm and load. MAF scale is never perfect.
6. Do all of the above with one type of fuel.

I'm onto Step 4 now. I'm going to set my WGDC back to normal (see screenshots below):

This is WGDC = 0


This is Stock WGDC (what I am going to set)


I also changed my AFR target:
Here's what it was when i was performing Steps 2 and 3:


To be safer, I'm running it slightly richer:



This is based on advice from mickeyd2005:
"When you are doing WOT at maximum potential of the turbo, I like to target 10.5 as a start just in case there was a mistake.

For example, if you target 11 and you were 10% off then you would be at AFR 12 which might be dangerous.

For the mid-range, you can get away with being slightly leaner."


I've saved the rom as "20080530_OL9b.hex" and this will be what I am going to flash to my car.

No comments: