Cruising A/F ratio?
Cruising A/F ratio?
I have adjusted my A/F according to the self help posts here but have found little offering on what people are finging their cruising A/F ratios. I have noticed mine in the 14.0-14.3 range.
Should I be adjusting my ratio to be in the 10's during my low throttle range as well or is this OK?
Please advise.
Should I be adjusting my ratio to be in the 10's during my low throttle range as well or is this OK?
Please advise.
Originally Posted by blkdinan
I have adjusted my A/F according to the self help posts here but have found little offering on what people are finging their cruising A/F ratios. I have noticed mine in the 14.0-14.3 range.
Should I be adjusting my ratio to be in the 10's during my low throttle range as well or is this OK?
Please advise.
Should I be adjusting my ratio to be in the 10's during my low throttle range as well or is this OK?
Please advise.
the 02 sensor is in complete control of a/f ratios during cruising and most part throttle, and any adjustment you try to make will have no effect. You can only make adjustments to the "fuel maps" with external fuel controllers, and these are not accessed until higher engine load. It's the difference between open/closed loop control.
Only make fuel adjustments during WOT and positive boost pressure, let the 02 sensor do it's thing during cruise conditions, and the 02 sensor should be trying to control at 14.7, which is perfectly ok for cruising.
Only make fuel adjustments during WOT and positive boost pressure, let the 02 sensor do it's thing during cruise conditions, and the 02 sensor should be trying to control at 14.7, which is perfectly ok for cruising.
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Originally Posted by nothere
doen't it depend of what emu he's got? I certainly have complete tuning control of the fuel on my car.
I think what your engine management supplier will tell you is..... you have complete control of the programmable fuel maps, but you don't have control of the closed loop response from the 02 sensor. You only have control of open loop mode, when the fuel maps are actually accessed. Like I said, don't take my word for it, ask your EMU provider.


