S-AFC hooked up to boost sensor instead of TPS!
#1
I came, I saw, I boosted.
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S-AFC hooked up to boost sensor instead of TPS!
I am doing a turbo conversion- and I had an idea.
I currently have no way of controlling fuel under boost- just estimating by way of throttle, and adding it with the S-AFC.
My idea- Why not get a TII boost sensor (which measures boost and vacuum, unlike the N/A one, which only measures vacuum), and run it in parallel with the stock N/A one?
Tee the vacuum line to it- run power to it, and then run the signal straight to the S-AFC?? (not to the ECU at all)
I'd leave the stock sensor untouched- to the ECU.
I'd change the S-AFC mode from TPS to pressure sensor.
Wouldn't this give me control over fuel, dependant on boost and indirectly- throttle position/engine load?
Can't regular TII guys do this too, especially those with s4's, and their crappy narrow range TPS'S??
I see no reason why this shouldn't work!- Can anyone??
I currently have no way of controlling fuel under boost- just estimating by way of throttle, and adding it with the S-AFC.
My idea- Why not get a TII boost sensor (which measures boost and vacuum, unlike the N/A one, which only measures vacuum), and run it in parallel with the stock N/A one?
Tee the vacuum line to it- run power to it, and then run the signal straight to the S-AFC?? (not to the ECU at all)
I'd leave the stock sensor untouched- to the ECU.
I'd change the S-AFC mode from TPS to pressure sensor.
Wouldn't this give me control over fuel, dependant on boost and indirectly- throttle position/engine load?
Can't regular TII guys do this too, especially those with s4's, and their crappy narrow range TPS'S??
I see no reason why this shouldn't work!- Can anyone??
#5
I came, I saw, I boosted.
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Ya- I did a search the morning for a related topic- and came across the fact that somebody beat me to this!!
I PM'd Chris Ng about it- he did it a while ago- so long ago that the threads he linked to have been deleted!
I just wanted to knoe if people changed the mode on the S-AFC or not.
This is a little different than with a TII computer- since the TII computer adds fuel anyways aunder boost. The NA ECU has no way of knowing about boost. That's why I wanted to use a TII pressure sensor, and use the S-AFC to accomodate for boost...
I'm still proud of myslef for coming upu with it though- but I guess I'm not the first one! (Damn.... like when I invented a screwdriver when I was 10...)
I PM'd Chris Ng about it- he did it a while ago- so long ago that the threads he linked to have been deleted!
I just wanted to knoe if people changed the mode on the S-AFC or not.
This is a little different than with a TII computer- since the TII computer adds fuel anyways aunder boost. The NA ECU has no way of knowing about boost. That's why I wanted to use a TII pressure sensor, and use the S-AFC to accomodate for boost...
I'm still proud of myslef for coming upu with it though- but I guess I'm not the first one! (Damn.... like when I invented a screwdriver when I was 10...)
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