[s-cars] Fuel mixture, boost, throttle position
Kevin Day
kday at ultrameta.org
Fri Jan 11 10:02:49 PST 2008
Stott Hare writes:
> I've noticed it leans out in partial throttle acceleration situations (anywhere around half throttle or so)
Yes, I think this is typical. I have a wideband on my S4 (MTM 1+ SW)
and I see the same thing.
Here is a graph with AFR and MAP, the region between full lean
(overrun) and boost is part throttle:
http://www.boost-instruments.com/fuel/044-58psi-4thgear.png
I don't have a graph with TPS handy but it would show the same thing.
BTW, if you get tired of das blinkenlights, this display is possible
with an upgraded TDS-1 and a wideband probe:
http://www.boost-instruments.com/wb/DSCN1094.jpg
-Kevin
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