4
**IMPORTANT**
Units with oxygen sensors only:
When using a unit with an oxygen sensor that is set to Oxygen Altitude
mode, the unit must remain stabile while in use. If movement has
agitated the unit it must remain stable for 15 minutes before taking air
samples. Unit does not need to have power on to stabilize!!!!
******Important******
It often takes a number of trips to the track to acquire the recommended
data in order to produce accurate results. Because of this, we suggest
using the following method until enough data has been acquired or using
the One Run Prediction Method (See Page 11).
Gasoline burning engines:
A 200’ rise in DA typically yields a 0.01sec slow down in ET and vice-
versa for a drop in DA.
Alcohol burning engines:
A 400’ rise in DA typically yields a 0.01sec slow down in ET and vice-
versa for a drop in DA.
For TS racers:
Typically the TS ratio is 3:1. This means is takes 0.03sec in the timer to
move the car 0.01sec. Use this information with the above DA change to
set up your timer.
If you read nothing else, please read
GUILDLINES FOR ACCURATE PREDICTIONS
on page 27!!!!!!!!!
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