EBL Surging when coming to a stop
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Joined: May 2012
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From: Manitoba, Canada
Car: 1987 Z28 IROC
Engine: 6.2L
Transmission: 700R4
Axle/Gears: 3.23
EBL Surging when coming to a stop
I recently installed the EBL Flash 2 and I have been VE learning. It seems after the VE learn I am getting surging when coming to a stop. It was better before. I don't really know where to go from here.
Could anyone have a look at the bin and datalog to see if anything jumps out?
Thanks, Kevin.
Could anyone have a look at the bin and datalog to see if anything jumps out?
Thanks, Kevin.
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: EBL Surging when coming to a stop
It is common for the engine to surge at low loads from the VE learns changing the VE table. The density of the AF mix is very low and hard to light off on a consistent basis. Open loop decel helps in this regard, as it eliminates the proportional gains causing surging.
Add some back into the VE table at the low load areas where it is surging.
Also, rework the lower RPM & MAP area of the low speed VE to blend it lower so the canyon isn't present. Intro to Tuning part 2 shows how this is done.
RBob.
Add some back into the VE table at the low load areas where it is surging.
Also, rework the lower RPM & MAP area of the low speed VE to blend it lower so the canyon isn't present. Intro to Tuning part 2 shows how this is done.
RBob.
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