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#Post#: 2446--------------------------------------------------
Interestings things applicable to 690's
By: Guymcfly Date: February 20, 2015, 10:07 pm
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Another of those things I occaision come across on the net....I
never have any financial interest in these things btw...
HTML http://www.sol2.be/Performance/ENG/Theory/page.html
#Post#: 2474--------------------------------------------------
Re: Interestings things applicable to 690's
By: the_trooper08 Date: February 25, 2015, 10:27 pm
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The theory makes sense. I wonder how it works in practice
#Post#: 2515--------------------------------------------------
Re: Interestings things applicable to 690's
By: GSP Date: March 9, 2015, 7:54 am
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The article is a joke, you must use wide band O2 and not a
narrow band Lambda sensor for closed loop control
PC5 with autotune is the way to go, it is full time all the time
closed loop control with wide band O2 sensor
#Post#: 2792--------------------------------------------------
Re: Interestings things applicable to 690's
By: Guymcfly Date: May 5, 2015, 6:46 am
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Can you explain the situation a little more for all us loop
dumbasses?
The only thing I know about what you talk about is that my O2
sensors have been disconnected and closed via tune ECU and
plugged.
Other than that I'm a little in the dark as I'm sure many others
are.
#Post#: 2872--------------------------------------------------
Re: Interestings things applicable to 690's
By: GSP Date: June 1, 2015, 7:32 am
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wide band 02 closed loop control:
In simple terms, closed loop control takes air/fuel ratio
measurements form the exhaust mounted Bosch wide band sensor
(very high rate highly accurate), this data is analyzed by the
PC5/auto tune and adjust the fuel delivery to the injectors real
time all the time based on the air/fuel ratio you select in the
PC5....
narrow band lambda sensors do NOT have the sample rate and
accuracy to gather data fast enough to feed back changes to
air/fuel in real time
I run 13:1 AFR
turbo or supercharged motors need 12 to 12.5:1 AFR for gasoline,
alcohol motors run 6:1 AFR
this guy does a half way good job of explaining it
HTML https://www.youtube.com/watch?v=_QwT81RuGWw
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