Boost control problem
#1
Boost control problem
I've literally tuned over 100 evos with Ecu-Boost control and I have never seen anything like this before. I was racking my brain yesterday trying to figure out WTH was going on so I need a second set of eyes from you guys!
Moved this 2003 Evo from a MBC to a GM 3 port and went to tune it and no matter what, the ecu will pull all the WGDC because it maxes out LoadError at 19.8 and uses -55 WGDCCorrection.
Here is a chart of what's happening:
Here is the data in straight-foward sheet forum if you find the above hard to read:
Here are the boost tables:
Notice that the logged 2byte load is NEVER above target load in the tables, yet it shows load error as maxed out and takes all the WGDC out.
I have WGDC vs TPS zeroed out like I usually do.
Variable for boost control is set to 2byte load
Notice the ECU is using -55 WGDCCorrection even though I only have a max of -7.5 defined in the Boost Error table.
I tried all these roms with the same effect:
94170008
94170014 Tephra V5
94170015 Tephra V5.10
I also tried zeroing out the Boost Error table so it wouldn't pull anything and still showed LoadError but it didn't take any WGDC out (finally something that made sense)
Anyone have any idea what the heck is going on here? Bad ECU? Something I overlooked?
Moved this 2003 Evo from a MBC to a GM 3 port and went to tune it and no matter what, the ecu will pull all the WGDC because it maxes out LoadError at 19.8 and uses -55 WGDCCorrection.
Here is a chart of what's happening:
Here is the data in straight-foward sheet forum if you find the above hard to read:
Here are the boost tables:
Notice that the logged 2byte load is NEVER above target load in the tables, yet it shows load error as maxed out and takes all the WGDC out.
I have WGDC vs TPS zeroed out like I usually do.
Variable for boost control is set to 2byte load
Notice the ECU is using -55 WGDCCorrection even though I only have a max of -7.5 defined in the Boost Error table.
I tried all these roms with the same effect:
94170008
94170014 Tephra V5
94170015 Tephra V5.10
I also tried zeroing out the Boost Error table so it wouldn't pull anything and still showed LoadError but it didn't take any WGDC out (finally something that made sense)
Anyone have any idea what the heck is going on here? Bad ECU? Something I overlooked?
#3
See, I knew I needed another set of eyes on this. I've been doing so many I just assumed my BCLO was 200. Even after making the screenshot and everything. 200 and 100 are the same color cell in ecuflash using the color set I use.
God I feel dumb now. I blame it on not eating at all yesterday.
I think I owe you like 15 beers by now tephra.
Last edited by razorlab; Dec 14, 2008 at 04:37 PM.
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#9
Evolved Member
iTrader: (9)
KAHKI.MAP color scheme then change window text to dark blue. All maps are distinguishable yet have a gradient.
The continental drift map (BRASS.MAP) for early style Al maps still beats em all hands down. Chunk's of stoich and rich floatin around in madness of custom tooned fuel mapping while the timing map, most of it 8 and red, allows knock to decide the advance. Guaranteed to give 20 more HP when you turn the MBC over stock
Seriously kahki color worth a shot
The continental drift map (BRASS.MAP) for early style Al maps still beats em all hands down. Chunk's of stoich and rich floatin around in madness of custom tooned fuel mapping while the timing map, most of it 8 and red, allows knock to decide the advance. Guaranteed to give 20 more HP when you turn the MBC over stock
Seriously kahki color worth a shot
#11
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Join Date: Nov 2006
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Ok. To bring this back from the dead...I'm having VERY similar issues. I am fairly new to tuning and have read over and over, searched over and over, cannot figure out my error.
Below are my settings and a excerpt from my log. I have played with baseline settings and tbec zero'd and recieved good boost results. Although, Loaderror is consistantly 19.8, but obviously only effecting boost when tbec is used.
Any ideas are greatly welcome.
-Travis
Below are my settings and a excerpt from my log. I have played with baseline settings and tbec zero'd and recieved good boost results. Although, Loaderror is consistantly 19.8, but obviously only effecting boost when tbec is used.
Any ideas are greatly welcome.
-Travis