Fuel dump after gear change or sudden WOT in higher rpm causing slight bogging

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Topic: Fuel dump after gear change or sudden WOT in higher rpm causing slight bogging (Read 3316 times)

elRey

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	Fuel dump after gear change or sudden WOT in higher rpm causing slight bogging « on: June 29, 2014, 07:25:19 AM »

Ok, I'm getting fuel dump from some where, but it's NOT reflected in desired AFR.

Right after a gear shift during a run or suddenly going WOT both in the upper RPM (>4500), desired looks fine (mid 12's) but actual pegs lower limit of 11.025 for a sec then comes back up and stabilizes.

During this fuel dump, the car feels like it boggs down. I've ruled out ESUK - rkukg_w and rka_w.

I'll post logs later.
Thanks in advance.
Rey


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phila_dot

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	Re: Fuel dump after gear change or sudden WOT in higher rpm causing slight bogging « Reply #1 on: June 29, 2014, 08:20:41 PM »

How did you rule out ESUK?

It sounds like it's related to load transitions.


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elRey

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	Re: Fuel dump after gear change or sudden WOT in higher rpm causing slight bogging « Reply #2 on: June 30, 2014, 05:44:46 AM »

made rkukg_g = 0 and b_bag = 0
Still got had fuel dump and bogging.


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prj

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	Re: Fuel dump after gear change or sudden WOT in higher rpm causing slight bogging « Reply #3 on: July 01, 2014, 12:23:15 AM »

Too small dump valve possibly causing reverse flow through MAF.


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