Best Commercial Wide-Band Exhaust Gas Analyzer...???

Jason R. Haines jhaines at lingenfelter.com
Fri Apr 27 14:05:19 GMT 2001


When you say wide band exhaust gas analyzer I am assuming you are talking
about air fuel ratio analysis and not multi-gas analysis. I am also assuming
you don't want laboratory grade equipment that is very expensive and often
can't be mounted in a car. Based on this, from the ones we have tested and
used, I like the air fuel ratio analyzers from ECM (Engine Control and
Monitoring). We have several Horiba meters and they work great but I am
biased against Horiba right now (for product support reasons) and you get
more meter for the same price from ECM (the sensors are cheaper too). For
most applications, the ECM AFRecorder Model 1200 is probably the best. It is
small, has a display, linearized programmable voltage output, an RS232
output and data logging. It can even simulate a switch type O2 sensor so
that you can plug the wide band sensor into the existing O2 sensor bung. I
think the Model 1200 sells for around $4,500. For a lot less you can get the
AFM1000 that looks like the NGK blue boxes but has a linearized voltage
output. The AFM1000 doesn't have a display or offer data logging. I think
the AFM1000 costs around $1700. The one we tested that we really liked was
the AFRecorder Model 2400 that has all the features of the Model 1200 plus
is records RPM, manifold pressure and spark timing. It is a lot larger than
the other two models so it isn't as easy to mount in the car. The model 2400
costs $8000. All three models offer "free air" calibration of the sensors. I
think they charge around $400 for the sensors. The ECM web site is
http://www.ecmco.com . Other companies to look at include ETAS (Bosch
emissions/calibration equipment) and Horiba.

Several cheaper models exist from other companies that use the Bosch 4 wire
wide band sensors (I think it is Bosch part number 0 258 104 002). They are
usually in the $800 to $1300 range. I think ETAS,  Motec, CDS (Competition
Data Systems), Autronic (sp?) and many others offer these systems.

And obviously don't waste your money on any of the products that call
themselves air fuel ratio meters that use the 1 to 3 wire heated switch type
O2 sensors - they should be called rich/lean indicators and nothing else.
8-)

Hope the helps,


Jason


>
> A friend is building a vintage racer (SB Chevy) and is interested in the
best
> commercial Wide Band Exhaust Gas Analyzer.
>
> He hasn't the time to build and debug/calibrate the DIY_EFI version at
this
> time so hence this request for recommendations.
>
> Of note, he'll likely be running leaded race gas so if possible an
analyzer
> that he could calibrate and replace the wide band lambda sensor (hopefully
> without sending it back to the manufacturer etc) would be best.
>
> TIA for all your help!
>
> Doug
>
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