ultra sensitive VE's?
07-06-2006, 09:17 AM
#1
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ultra sensitive VE's? To get my VE's dialed in....I have to increment the values fractionally. IE say a cell is 16:1 afr, and the VE value is 40. I have to make it 40.3 to make it 14.0.
Why is my car so dang touchy? This will make it pretty durned hard to tune. Also, FWIW, the few cells I do have dialed in fairly well, are way different than other bins i've seen. i looked at a stocker, and a buds heads/g5x3 VE tables and they are way higher. Also, my bud seemed to think my wideband values seemed to bounce around quite a bit.
When I ordered my injectors (lucas 42.5s) from speed inc, i had them sent directly to ARE when they did my motor. I'm wondering know if I even have 42.5's in it, maybe they put 60's in or something? It would not surprise me at all...that clown-show really did a number on my motor, they have/had no clue whats in the motor (or even how to put one together correctly). I redid it recently and hardly anything was what they told me it was supposed to be.
Why is my car so dang touchy? This will make it pretty durned hard to tune. Also, FWIW, the few cells I do have dialed in fairly well, are way different than other bins i've seen. i looked at a stocker, and a buds heads/g5x3 VE tables and they are way higher. Also, my bud seemed to think my wideband values seemed to bounce around quite a bit.
When I ordered my injectors (lucas 42.5s) from speed inc, i had them sent directly to ARE when they did my motor. I'm wondering know if I even have 42.5's in it, maybe they put 60's in or something? It would not surprise me at all...that clown-show really did a number on my motor, they have/had no clue whats in the motor (or even how to put one together correctly). I redid it recently and hardly anything was what they told me it was supposed to be.
07-06-2006, 10:32 AM
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Be sure that you aren't chasing something around
the tree, like a poorly performing WBO2, an air leak
or air pump running, etc.
Though in some cases there can be positive feedback
in mixture, especially in open loop running off a high
enrichment point in the table vs MAP (more fuel
further depresses vacuum / raises MAP, leading to
even more fuel) this should not be the case in the
area of EQ=1.000 commanded.
I suspect an offset / sampling / unmetered air sort
of error, more than a 0.8% airflow tweak making a
9% AFR actual change. Watching your injector
pulse width (higher resolution) might be interesting,
did it move 9% (AFR indicated) or did it move 1%
(VE modified)?
the tree, like a poorly performing WBO2, an air leak
or air pump running, etc.
Though in some cases there can be positive feedback
in mixture, especially in open loop running off a high
enrichment point in the table vs MAP (more fuel
further depresses vacuum / raises MAP, leading to
even more fuel) this should not be the case in the
area of EQ=1.000 commanded.
I suspect an offset / sampling / unmetered air sort
of error, more than a 0.8% airflow tweak making a
9% AFR actual change. Watching your injector
pulse width (higher resolution) might be interesting,
did it move 9% (AFR indicated) or did it move 1%
(VE modified)?
07-06-2006, 10:48 AM
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This is an OLSD tune. All air is unmetered. I'm fairly certain I dont have anything in regards to a poorly performing WBO2 (new), an air leak (unmetered), or air pump running (doesn't have), etc.
07-07-2006, 11:40 AM
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Has anyone else experienced this? Makes using the RTT features very hard. I can't just increment/decrement a cell with the + - button. Have to change it by hand.
