Dual fueler SURGE AT WOT issue ECM overcorrecting? PID LOOP?..Log Inside
I'm at a near witts end here. Possibly this is not a tune issue, but sure seems to be fixable via FRP PID LOOP correcting. It seems as though the ecm is seeing desired under and overshooting actual and over-correcting.
Does anyone have any insight? Possibly fought and conquered this issue on a lbz with dual fuelers? I was commanding 183mpa and 2800ish uS.
Thanks for any help, i sure appreciate it.
-Kory
To me, it appears you are fighting traction defueling. The VSS curve is what I see, tires breaking loose.
Michael, Systems Engineer 04.5 D-max LLY, Phoenix, Arizona Email
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No it was what i had suspected with the PID loop..obviously it could not be fixed with the loop itself, but i did find a way to do so and i can command 26-30k no problem with no fluctuations whatsoever.
Thanks though!
It would be cool to know how you fixed it. I have the same issue when I'm WOT.
Chuck Bondurant
Duramax LMM
EFI Live tuned -Idaho Rob
ATS transmission
Bully Dog - PMT gauges only
MPI Twins
40 Over injectors
FASS Fuel System
Fabtech 6" - 18" XD Addict Rims
need to re-curve the regulator current vs flow table
Chuck, email me. I have tuned many that do not do this.
2013 LML, 550hp with factory emissions, stock cp4 and compound turbos.
2002 LBZ, 4x4 (Max'd Out) 6000lbs 9.36 @ 154 mph NHRDA Champion and Record holder
1965 El Camino, duramax 9.6 @ 149MPH
All EFI tuned by Adrenaline Truck Performance
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