Nitrous Express DRAG-SPORTSMAN N2O - Manual (Page 5)

4
Davis Technologies TM-Drag-Sportsman-MAP V3 2010
How Does It Work?
This system differs from other systems that you may
be familiar with because it does not use any external
wheel or ground speed sensors. Instead it uses a
patented method that simply monitors engine speed
or driveline speed to determine when wheel spin
occurs. This process is a very simple way to
effectively detect wheel slippage and evoke a means
of correcting the slippage. In this case reducing the
Nitrous Injected degrades the engine performance.
When the Nitrous is reduced the loss of power is
instant and generally sufficient to stop or greatly
reduce the wheel spin.
However, there are limits to the unit. It is not a “Fix-
All.” It will not fix a bad tune up or poor driving. It
will however help a good driver in a good car get the
power to the ground better and make more full
passes. This allows the user to collect data to use to
determine how to make adjustment to the car to get
a better setup. A full pass, even if it is a few
hundredths slow is very valuable compared to
blowing the tires off 100 feet out.
For example, if your racecar experiences a loss of
traction around 300’ the system will detect this and
send a signal to the nitrous controller to reduce
nitrous. This will reduce the amount of torque
delivered to the drive wheels and help to regain grip
much faster than the driver can “pedal” the throttle.
With a little practice the system is easy to configure
and use. Typically after only a few test runs the
proper settings can be reached. Most drivers adapt
quickly to a car that does a little of the driving for