how-to: ECU-based direct boost control
#663
Everything is good now it was just that one endian I must have forgot as always something. I was curious if I was getting this right though.
Seeing the Max is 24.6 and I want 30 psi. Im at sea level here in RI some 14.6-7 I would have a adder of 20.1.
30+14.7=44.7 44.7-24.6=20.1
Im running meth so I want to 29-30psi spike and see what it will hold after that. Normally I would always end up with a high 22psi sometimes 23.
Before this my evc was limiting to 25 psi until I tightened my wastegate 2 turns and I got 27-28 psi. So all should be good. Well find out though. lol.
Seeing the Max is 24.6 and I want 30 psi. Im at sea level here in RI some 14.6-7 I would have a adder of 20.1.
30+14.7=44.7 44.7-24.6=20.1
Im running meth so I want to 29-30psi spike and see what it will hold after that. Normally I would always end up with a high 22psi sometimes 23.
Before this my evc was limiting to 25 psi until I tightened my wastegate 2 turns and I got 27-28 psi. So all should be good. Well find out though. lol.
#664
FYI: for those that use Logworks, I translated the Evoscan formulas to Logworks. I haven't tested it yet (waiting for my Perrin EBCS):
<datachannel id="#8A" name="Boost Error" selected="0" units="psi" min="-5" max="5" expr="0.0241*x-3.087" type="0"/>
<datachannel id="#8B" name="WGDC Correction" selected="0" units="WGDC%" min="-50" max="50" expr="0.5*x-64" type="0"/>
<datachannel id="#8A" name="Boost Error" selected="0" units="psi" min="-5" max="5" expr="0.0241*x-3.087" type="0"/>
<datachannel id="#8B" name="WGDC Correction" selected="0" units="WGDC%" min="-50" max="50" expr="0.5*x-64" type="0"/>
#665
Hopefully not a dumb question, but does anyone know why there are 3 WGDC tables and 3 baseline boost/BDEL tables? Also should all 3 tables be set to the same values? Ditto the two WGDC Correction Interval tables - should I set both to the same value and why are there 2 tables?
#666
#667
Hopefully not a dumb question, but does anyone know why there are 3 WGDC tables and 3 baseline boost/BDEL tables? Also should all 3 tables be set to the same values? Ditto the two WGDC Correction Interval tables - should I set both to the same value and why are there 2 tables?
You can set them for gear based control or just make them the same.
#668
https://www.evolutionm.net/forums/ec...t-control.html
You can set them for gear based control or just make them the same.
You can set them for gear based control or just make them the same.
#669
I just got back from a few pulls with my gm solenoid and I have my boost error table set to 0 and my max wastegate duty cycle at 100% all the way and it actually matches my boost tables.
Is this bad that my wastegate duty is at a straight 100% right to redline ?
Is this bad that my wastegate duty is at a straight 100% right to redline ?
#670
Any suggestions on how to get more boost out of the system?
AEM EBC Solenoid
.050" restrictor
FP High pressure actuator
FP red turbo
hitting 30psi at 5500 tapering to 26/27 by 8k
AEM EBC Solenoid
.050" restrictor
FP High pressure actuator
FP red turbo
hitting 30psi at 5500 tapering to 26/27 by 8k
#671
Thread Starter
EvoM Guru
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From: Tri-Cities, WA // Portland, OR
The only thing left is to fiddle with the WGA spring or preload (or open up the exhaust further to reduce exit pressure on the turbine).
#672
Straight lines, no pills
Forge red spring actuator
FPred
3rd gear
Still had more duty cycle, had it at around 33psi at one point but didn't need the power at that time.
#673
#674
Was wondering if some can help identify why I can't seem to follow the steps for Tuning the boost. I have followed the instructions, but am still over boosting, and going through the steps and removing the BEC, or setting them to zero can be dangerous with whatever I have going on.
The reason I am doing this is because I was getting boost spike up to 27 psi, and I am all stock TBE 9MR. My target would be 25 then taper. I have the JDMMAP, a GuppeS BS, and IC pipes.
Can anyone help me identify what I am setting incorrectly based on the image below, or let me know what you need to see.
I have also attached a zipped csv file of the log. Not sure if I hit the boost cutoff or what that should sound or feel like, but whatever it was at WOT, it wasn't good I suspect.
Thanks for any help.
The reason I am doing this is because I was getting boost spike up to 27 psi, and I am all stock TBE 9MR. My target would be 25 then taper. I have the JDMMAP, a GuppeS BS, and IC pipes.
Can anyone help me identify what I am setting incorrectly based on the image below, or let me know what you need to see.
I have also attached a zipped csv file of the log. Not sure if I hit the boost cutoff or what that should sound or feel like, but whatever it was at WOT, it wasn't good I suspect.
Thanks for any help.
Last edited by fireroasted; May 31, 2009 at 06:56 PM.