This is the NGK Air Fuel Ratio Meter that can be mounted under
the dash.
![](pics/ngk-91101_w.jpg)
This is the
complete kit from NGK.
![](pics/airflow%20002%20(Small).jpg)
A few
electronic items are needed as you must pre-heat the wide band
oxygen
sensor prior to the calibration process. A 12V power
supply, digital multimeter
to check voltage and a digital infra red temperature gauge
verifies the setup.
![](pics/airflow%20003%20(Small).jpg)
This power
supply puts out perfect voltage for the calibration process..
![](pics/airflow%20005%20(Small).jpg)
The
wiring harness hooked into one of my spare Ham Radio power
supplies.
![](pics/airflow%20006%20(Small).jpg)
You want to
keep this sensor away from anything flammable or pets and nosy
people.
![](pics/airflow%20007%20(Small).jpg)
It's
warming up, but not quite where I need it.
![](pics/airflow%20011%20(Small).jpg)
Now it's
ready to be calibrated.
![](pics/airflow%20014%20(Small).jpg)
The
calibration process begins according to the instructions.
![](pics/airflow%20012%20(Small).jpg)
Final
calibration is done and it's max lean because there's no fuel in
the air.
![](pics/airflow%20009%20(Small).jpg)
The bung
and plug to cap it off in case you decide to remove the sensor.
![](pics/airflow%20008%20(Small).jpg)
Out of the
drill press and into the vise.
![](pics/airflow%20019%20(Small).jpg)
A quick
skim with the grinder after drilling and prior to test fitting
the bung.
![](pics/airflow%20022%20(Small).jpg)
Just a
little more grinding to get the right area for fitting the bung
and filling with weld.
![](pics/airflow%20021%20(Small).jpg)
The bung is
welded in place with the cap screwed in so that it won't
distort.
![](pics/airflow%20023%20(Small).jpg)
This work
is best left for an expert. It took longer to cool than
to do the entire welding and re-installation of the exhaust
system.
![](pics/airflow%20024%20(Small).jpg)
A nice neat
solid weld that will last forever.
![](pics/airflow%20025%20(Small).jpg)
I made the
mistake of touching this 35 minutes after welding and burned
three fingers.
![](pics/airflow%20026%20(Small).jpg)
The
wideband sensor is installed and we are ready to go.
![](pics/airflow%20033%20(Small).jpg)
A temporary
location for tuning. Easy to see from under the hood and
test driving.
It's really
a nice feature to be able to move it in and out of the car
easily.
A little
rich for idle, but close enough for now.
It really needs to be run on the open road before any more
adjustments.
![](pics/airflow%20036%20(Small).jpg)
After
tuning the carbs a bit, you have to clear them out and when it
comes back the reading generally goes dead lean until the engine
stabilizes.
![](pics/airflow%20039%20(Small).jpg)
Warming up
a cold engine with 90% choke.
![](pics/newengine%20492%20(Small).jpg)
Warming the
engine on choke gives a rich mixture,
which is exactly what it reads at Wide Open Throttle.
Still some
tuning to go now that the new engine is broken in.
![](pics/newengine%20493%20(Small).jpg)
Thanks to
Jamie's work underneath, a nice, neat
and simple installation.
Jamie's
Performance Muffler Shop
45
Alden Street
Pawtucket, RI 02861
(401)
725-7473
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