how-to: ECU-based direct boost control
Jan 21, 2008, 10:05 AM
#182
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Anyone know the approximate orifice size of the stock T pill? My has been mia for a few years. I may try the vishnu bleeder as well. Is it what they call the passive boost solenoid emulator? Hell, I'll try em all!
Last edited by FuelsResearch; Jan 21, 2008 at 10:12 AM.
Feb 1, 2008, 09:53 AM
#187
Just a note ... I'm doing some testing with a mostly flat BWGDC profile and basically letting the TBEC table control the boost. Results were promising to start, but my car's been down for a week. I'll do some more testing when I get it reassembled.
The only problem I see with it so far is that the stock BCS is a little slow to react and there seems to be a maximum correction that can be applied to the WGDC. I think the GM solenoid and a little more correction delay could help with the response in this situation and the max correction isn't an issue if you set the BWGDC somewhere logical.
The only problem I see with it so far is that the stock BCS is a little slow to react and there seems to be a maximum correction that can be applied to the WGDC. I think the GM solenoid and a little more correction delay could help with the response in this situation and the max correction isn't an issue if you set the BWGDC somewhere logical.
Feb 1, 2008, 10:09 AM
#188
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I use a GM 3-port. Don't know if I should add what I have because i'm not using direct boost control, I'm on load-based. But here is my current WGDC table and the boost curve it produces (this error correction off).
Last edited by roger smith; Feb 1, 2008 at 11:17 AM.
Feb 1, 2008, 10:45 AM
#189
Just a note ... I'm doing some testing with a mostly flat BWGDC profile and basically letting the TBEC table control the boost. Results were promising to start, but my car's been down for a week. I'll do some more testing when I get it reassembled.
The only problem I see with it so far is that the stock BCS is a little slow to react and there seems to be a maximum correction that can be applied to the WGDC. I think the GM solenoid and a little more correction delay could help with the response in this situation and the max correction isn't an issue if you set the BWGDC somewhere logical.
The only problem I see with it so far is that the stock BCS is a little slow to react and there seems to be a maximum correction that can be applied to the WGDC. I think the GM solenoid and a little more correction delay could help with the response in this situation and the max correction isn't an issue if you set the BWGDC somewhere logical.
Feb 1, 2008, 11:23 AM
#190
I started on 45% I think because of the weather ... that's why I found the correction limit. I wanted to keep it safe for the initial testing. I was running ~65% or so for my desired load.
Choosing a median BWGDC for all seasons would be the key to avoiding the correction limit ... likely somewhere around 70% as you mentioned.
Choosing a median BWGDC for all seasons would be the key to avoiding the correction limit ... likely somewhere around 70% as you mentioned.
Feb 1, 2008, 12:26 PM
#191
Just a note ... I'm doing some testing with a mostly flat BWGDC profile and basically letting the TBEC table control the boost. Results were promising to start, but my car's been down for a week. I'll do some more testing when I get it reassembled.
The only problem I see with it so far is that the stock BCS is a little slow to react and there seems to be a maximum correction that can be applied to the WGDC. I think the GM solenoid and a little more correction delay could help with the response in this situation and the max correction isn't an issue if you set the BWGDC somewhere logical.
The only problem I see with it so far is that the stock BCS is a little slow to react and there seems to be a maximum correction that can be applied to the WGDC. I think the GM solenoid and a little more correction delay could help with the response in this situation and the max correction isn't an issue if you set the BWGDC somewhere logical.
Last edited by Evo_Jay; Feb 1, 2008 at 12:30 PM.
Feb 1, 2008, 12:29 PM
#192
sept. 16, 07
Yeah, defiantly tune like this. Zero TBEC, use WGDC to get you to your desired boost level, then re induce the TBEC.
The only thing I do different is a run a flat WGDC ie 65s from 3000-7000. I just make sure that the WGDC I use, gets me to my desired peak boost. I then let the correction take away the taper.
The only thing I do different is a run a flat WGDC ie 65s from 3000-7000. I just make sure that the WGDC I use, gets me to my desired peak boost. I then let the correction take away the taper.