The stock ECU has gear dependent boost control!
can you change the higher gear WGDC to something really low and see if it switches to that? I believe Tephra mentioned in some thread that the resolution for WGDC doesn't actually have the .5% resolution that we enter in and rounds to a different value (hopefully he can chime in). Try putting like 20% in there just to see what it does.
I'll try to do that, but I would think that a difference from 51 to 55 would be logged. I did not see a difference in the 3 logs I did.
Or maybe I'm logging the wrong wgdc(id86)?
Or maybe I'm logging the wrong wgdc(id86)?
Last edited by Jorge T; Nov 10, 2008 at 06:10 AM.
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From: Tri-Cities, WA // Portland, OR
FYI, the auto cars heavily rely on gear dependance for not just the boost, but also main fuel and ignition map selection. They use one map for 1st and 2nd gear and another for 3rd, 4th,5th gears. Maybe some browsing through the code may help to see if the same can be applied to other roms to allow the same feature.
It has to be which maps you are using. I'll have to look at my 94170008 disassembly to determine which maps matter.
Nice find. I think this will be very usefull for tunning for consistent boost across all gears. I use PSI based boost control and I tend to have slightly lower boost in 1 & 2 gear. It will be nice to be able to raise the WGDC in 1st & 2nd to help get the boost up higher. We all know how cool AWD burnouts are, lol.
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From: MA
This is awesome. I'd say its especially useful for people running the load targeting rather than the JDM map and PSI targeting. I know my car hits totally different boost levels in 4th than it does with third since the load values change and the ECU tries to hit my taget load values in my BDEL table. So there were 4 BDEL and BWGDC tables originally right? So now only 2 of them are proven to do anything?? Sorry, trying to catch up here.
only problem with using a 3dmap for gears is that i can't use a 3dmap for MAP/RPM...
but maybe thats no so important.
I need to do some logs of 100% WGDC until 18-20psi then normal WGDC's vs normal WGDC's from 0psi..
but maybe thats no so important.
I need to do some logs of 100% WGDC until 18-20psi then normal WGDC's vs normal WGDC's from 0psi..
Tephra, the only thing i would possibly suggest is to just have the gear number instead of the RPM/MPH if possible. I know it is simple to figure out but just for ease of use.
