In the ROM there are definitions for 4 BWGDC tables, 3 are actually referenced by code, and 2 are actually used.

I guess when people where discovering the tables from the ROM they didn't/couldn't look at which tables where actually being used by the code, so they just put all 4 in the XML...

 

Yeah i didn't remember how many tables the IX has since my definitions have them removed. I was looking at a buddy's car i tuned who has an 8 and saw 4 tables.

 

I haven't messed with PSI targeted boost control yet, just the load targeted setup but I certainly see where different boost in 1st gear is useful, 2nd & 3rd have their own and 4th gear has its own for the 1/4 mile fellas. I hate having 3rd gear dialed in to the max but its too much for 4th gear and I get knock up top before I cross the finish line

 

I feel your pain jamie.

 

I did read the post ...I just made an observation since I was curious to know if it had relevance since the values changed, I guess not then.

I tried this today: changed the crossover to 105 modified bdel & wgdc#1 and #3 with different values but the logged wgdc remained the same in gears 1-3

 

If there was a way to take this finding and make some kind of wgdc table/target boost table for each gear it would be the greatest thing since sliced bread........

dunno how possible that actually is though..

 

This just makes me wonder.......

We have gone to great lengths to add maps, knock lights, and god knows what.

Behind the scenes.... are there things we are screwing up that we don't know about as of yet?

 

possibly.

but I go to great lengths to ensure what we are removing (in this multi wgdc map case) wasn't being used.

Every ROM i have seen has had 0xFFFF set for the BLCS, which effectively disables it. Thus removing it didn't "hurt" anything.

But now we have a better understand of its capabilities I will see if I can add it back in

 

MrFred... do you think there might also be a correlation to the alternate ignition tables? Depending upon this crossover point there might also be a timing map to match it?

btw... I fixed my problem with the boost control... your boost based EBC setup is AMAZING

 

That would be cool, especially cuz I'm a 1/4 mile guy. I'd love to have a seperate ignition tune for 4th (combined with 5th) gear as opposed to the ignition for 1st,2nd and 3rd gear since I'm in 4th gear for more than half of the track.

 

Interesting that it didn't have an effect. The algorithm to choose is based only on the crossover value. Did you try making the two sets of tables hugely different.


Its possible and not that hard. Someone just needs to do it.


Not really. With one exception, all my patches are written onto blank ROM space. There is one that replaces some code, but I know exactly what the old code does. I think tephra's patches make similar use of blank ROM space.


I've been through the ignition map selection routine, and there's no algorithm for map selection based on gear ratio. Turns out that the rpm/mph variable is used in only a few places. The boost control algorithm is the only place its used for map selection.

 

Gear dependent boost control is disabled on tephra ROMs. Are you by chance using a tephra ROM?

 

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.

 

Wow you guys are great! I would think that the EVO X should have some of the same type of maps for the boost. I can't wait till it available.

 

Not using a tephra ROM just a 94170008 ROM... maybe when I changed the load variable for boost control the crossover got disabled?