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absolutely, an accurate map is required and closed loop is not a substitute. I think there is almost a fad right now to mount a remote lambda gage...
no more complex? Sure, the LM-11 is the same narrowband technology, but a lsu4 is a completely different beast. Investigate for yourself what a...
I think understand your point now. To paraphrase, the voltage swings ~600mV over a small range of lambda values (0.9-1.1), therefore the AFR...
mke- I'm certainly not the last word on the subject. Go research it for yourself. There are several good books on the subject. Also, it is easy to...
Bob S- yes, wideband sensors are much more complicated devices than narrowband, and its fair to say they won't live as long as a narrowband....
O2 sensors can last a long time. 30k miles is reasonable, even 50-60k. Life is significantly shortened if leaded fuel used, or exposed to glycol...
the advantage for using a wideband sensor is very simple. The ECU can directly read the lambda with a wideband, whereas, the narrowband requires...
aircon- you can easilly tell the sensor type by counting the number of wires on the O2 sensor. If it has 5 wires, it is a wideband sensor. If...
aircon, the type of O2 sensor dictates the closed loop mode, i.e. wide or narrow band. You cannot use wide band mode with a narrow band sensor....
efioz, i'm not following you where there is a contradiction. The corrections are in the form of logged short and long term trims. sorry I wasn't...
assuming the 550 uses a narrow band sensor, if you shorted it to ground, then true, this simulates a lean signal. However, the ECU may not trust...
yes, the motec ECUs support narrow-band and wide-band operation. Abosutely, wide band can be used under all efficiency points. I am using it now...
i bet TP wiring was the critical factor here. interesting.
the only thing i can think of...maybe crosstalk between the signals. twisted pair wiring could have helped if this was the case. It just makes no...
they are correct in saying the energy stored in the capacitors will be split between the 2 coils in a wasted spark setup. Iin parallel...
AVMotorsport-I saw your followup question on the msd forum. I wouldn't hold my breath for a coherant detailed answer from msd tech support. I...
my countach has been upgraded with a motec EFI and it is distributorless. An ignition expander is used to drive 6 coils in a wasted spark config....
I recently tried this setup on my countach. I had a similar experience also. Idle and midrange was fine, but 6k RPM and above had random misses....
when is this event? I'll be there in february and can log that data for you
Asheville is a great town. I bought a place in downtown 4 years ago and love it. I'm 41 so still have a few years to retirement. I wouldn't mind...
