how-to: ECU-based direct boost control
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From: Tri-Cities, WA // Portland, OR
mfred
need your input here: i moved to SD with 88570008 - JDM rom that jscbanks made. car idles great, dries normal (AFRS look fine).
however, my max WGDC on the Alt map and main map are both set below where i should be (at 20) i should be getting 12 psi as normal, however, i am seeing 29 psi!
i tested the wastegate solenoid using evoscan and it clicks!
here are some pics of my settings:
...
the only thing i can guess is the BDEL has more of an effect for SD????
Thanks
need your input here: i moved to SD with 88570008 - JDM rom that jscbanks made. car idles great, dries normal (AFRS look fine).
however, my max WGDC on the Alt map and main map are both set below where i should be (at 20) i should be getting 12 psi as normal, however, i am seeing 29 psi!

i tested the wastegate solenoid using evoscan and it clicks!
here are some pics of my settings:
...
the only thing i can guess is the BDEL has more of an effect for SD????
Thanks
thanks for the reply i was on 85880014, i had it configured for BDEL on my map.
i always thought the BDEL was just to make it spool faster and the WGDC controls the actual amount of boost?
hmmm maybe with SD the BDEL has more influence?
so i should drop my BDEL Level to desired and try from there?
BTW: any chance on doing direct boost control for 88570008 (JDM IX)?
i always thought the BDEL was just to make it spool faster and the WGDC controls the actual amount of boost?
hmmm maybe with SD the BDEL has more influence?
so i should drop my BDEL Level to desired and try from there?
BTW: any chance on doing direct boost control for 88570008 (JDM IX)?
thanks for the reply i was on 85880014, i had it configured for BDEL on my map.
i always thought the BDEL was just to make it spool faster and the WGDC controls the actual amount of boost?
hmmm maybe with SD the BDEL has more influence?
so i should drop my BDEL Level to desired and try from there?
BTW: any chance on doing direct boost control for 88570008 (JDM IX)?
i always thought the BDEL was just to make it spool faster and the WGDC controls the actual amount of boost?
hmmm maybe with SD the BDEL has more influence?
so i should drop my BDEL Level to desired and try from there?
BTW: any chance on doing direct boost control for 88570008 (JDM IX)?
Rolly,
your "BCLO" (boost control load offset) + "BDEL" (boost desired engine load) is what your target load should be.
When I was running "load based control" I set up my BCLO to 200, and 95 in the BDEL, up to 3500, and taper to whatever load levels your hitting.
And then from there, "WGDC" is what is used to achieve that target load/boost... So if your not hitting target load, you need to add WGDC...
your "BCLO" (boost control load offset) + "BDEL" (boost desired engine load) is what your target load should be.
When I was running "load based control" I set up my BCLO to 200, and 95 in the BDEL, up to 3500, and taper to whatever load levels your hitting.
And then from there, "WGDC" is what is used to achieve that target load/boost... So if your not hitting target load, you need to add WGDC...
Rolly,
your "BCLO" (boost control load offset) + "BDEL" (boost desired engine load) is what your target load should be.
When I was running "load based control" I set up my BCLO to 200, and 95 in the BDEL, up to 3500, and taper to whatever load levels your hitting.
And then from there, "WGDC" is what is used to achieve that target load/boost... So if your not hitting target load, you need to add WGDC...
your "BCLO" (boost control load offset) + "BDEL" (boost desired engine load) is what your target load should be.
When I was running "load based control" I set up my BCLO to 200, and 95 in the BDEL, up to 3500, and taper to whatever load levels your hitting.
And then from there, "WGDC" is what is used to achieve that target load/boost... So if your not hitting target load, you need to add WGDC...
i doubt it, once the WGDCs are all 20 like in the picture i attached earlier i should be fine and be hitting wastegate boost right?
unless the dual solenoid bit adds some complication
yup i know what i am asking is: does the BDEL and BCLO actually control how much boost i hit? or cause me to overboost?
i doubt it, once the WGDCs are all 20 like in the picture i attached earlier i should be fine and be hitting wastegate boost right?
unless the dual solenoid bit adds some complication
i doubt it, once the WGDCs are all 20 like in the picture i attached earlier i should be fine and be hitting wastegate boost right?
unless the dual solenoid bit adds some complication

Does anybody read the how-to in the first post anymore?
If you have error correction on, then BDEL + BCLO will add or subtract WGDC depending on how over/under you are from their target.
Does anybody read the how-to in the first post anymore?
Does anybody read the how-to in the first post anymore?

i tried with zero correction! thats why i posted its a weird issue
yup i know what i am asking is: does the BDEL and BCLO actually control how much boost i hit? or cause me to overboost?
i doubt it, once the WGDCs are all 20 like in the picture i attached earlier i should be fine and be hitting wastegate boost right?
unless the dual solenoid bit adds some complication
i doubt it, once the WGDCs are all 20 like in the picture i attached earlier i should be fine and be hitting wastegate boost right?
unless the dual solenoid bit adds some complication

BDEL + BCLO is the "target" for how much load/boost you wanna run.
MWGDC is what actually controls if you will reach your target load/boost.
Tune the car w/ the + corrections off, and when done working on your boost profile, then add the + corrections back in, and go at it again... Now if your BDEL is too low for that rpm/load range, you will overshoot, and corrections will take place... Remember to give yourself ~ 5 - 10 load points, just in case you do, overshoot... Ex. If you hit 280 load in your log, put in 85 in your table (if you have 200 as BCLO)
I Hope Im helping, and not telling you things you already know...

edit: do you have the secondary solenoid? If so, listen to GST!
car HAD a secondary boost solenoid....
now it is the 3 port boost solenoid.
those are the answers i am looking for! so for example, theoretically!:
WGDC #1/1 = 70 (hoping for 21 psi)
WGDC #1/2 = 0 (being "passive")?
WGDC #1/3 = 0 (being "passive")?

another problem is how am i gonna do this in tephra's mod!
now it is the 3 port boost solenoid.
You will need less WGDC on the passive secondary solenoid.
WGDC #1/1 = 70 (hoping for 21 psi)
WGDC #1/2 = 0 (being "passive")?
WGDC #1/3 = 0 (being "passive")?

another problem is how am i gonna do this in tephra's mod!
Surely there must be a way without that. I mean, here Mr.Fred is running on the stock boost solenoid and his boost is tapering a lot less (in fact this is really the profile I'm looking for as well).



