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TIPS for calibration:
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for accurate calibration it's recommended to make longer distance:
o
tank to full (remember to set proper tank capacity before)
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reset statistics in tacho screen (distance and average fuel consumption) by long pressing SW3 and follow display instructions,
o
travel long distance (at least 100 km or miles - you don't have to do it single trip),
o
refuel to full and calculate real average fuel consumption from distributor data,
o
make correction using Measurement Correction function in UTCOMP application.
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displayed readings are recalculated by UTCOMP each time you change vss and injection constants. Please note that if you change VSS constant
than UTCOMP will also recalculate average fuel consumption because travelled distance have changed.
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you can calibrate vehicle speed with: tachometer (generally it has 10% mistake), vehicle's odometer and GPS. Most users calibrate it with
vehicle's odometer (in this case utcomp's mileage will cover vehicle's mileage and current speed will be more accurate than speed displayed on
tachometer but less accurate than speed from GPS)
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it is very important to set appropriate type of fuel consumption signal in UTCOMP application (Settings -> Configuration -> Vehicle Data) - if
you make mistake here than fuel consumption will not work or will be not accurate. In most petrol engines it will be PWM(-). In most diesel
engines (with dedicated fuel consumption signal) it will be PWM(+), rarely FREQ signal:
o
when you accelerate, current fuel consumption should increase - if it decrease than you have probably inverted signal (swap + with -),
o
when you braking with engine (release gas pedal at higher rpm) than current fuel consumption should be equal to zero or almost zero