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SPECIAL FEATURES OF THE SMT7
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BOOST CONTROL
The Boost Control feature is designed for turbo installations where the boost
must be controlled. This is particularly important when the engine is NOT
de-compressed, and when a rather small turbo is used. In most cases the engine
has the tendency to “ping” between 2000-3000 RPM. The boost control
can reduce the boost at the critical RPM and then increase the boost
significantly at the higher RPMs where the airflow is restricted.
The Boost Control feature can also be used as a stand-alone function for
aftermarket boost control.
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CLOSED LOOP LAMBDA (FUEL LOOP)
The SMT7 can work directly with a 0-1 Volt Narrow Band sensor, or with a 0-5 Volt
Wideband AFR signal from a Perfect Power Wide Band Controller (WBC) or other
external device.
You can run your conversion in closed loop, partially closed loop, or open loop -
it is freely programmable! (See Lambda Tuning below)
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LAMBDA TUNING
If your engine is closed loop controlled by a narrow band lambda sensor, then
you can tune it. Changing the ECU target to a more economical or more
powerful setting, will do this. You can also tune WIDE BAND closed loop, but you
won’t be able to see the AFR directly, you'll just feel the effect!
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IGNITION CONTROL
The SMT7 can “modify” two engine signals simultaneously. This allows
you to retard and advance timing facilities on all engines with a compatible crank
trigger wheel pattern e.g. 60-2. Complex ignition control
(e.g. multiple gap, CAM pattern) is possible.
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INJECTION CONTROL
This is for controlling EXTRA injectors, which are placed in the manifold to
SUPPLEMENT the original injectors. This is one of the best ways to get more fuel
into an engine after adding a supercharger or turbo.
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SETPOINT CONTROL
Setpoint Control has become a standard feature on our products, such as the XMS and
XMS-L.
The SMT7 has three setpoint
outputs and 12 setpoint functions, with the possibility to link functions with
a logical AND/OR. For example, Switch a relay on/off when the throttle is
more/less than 75% AND RPM is higher/lower than 3000.
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MORE INPUTS or OUTPUTS
Instead of sharing wires between functions, we have assigned a wire to every
function. This makes the SMT7 easier to understand and wire up, which results
in two connectors with a total of 36 wires.
Since there are so many features
in the SMT7 unit,
the SMT7 harness (wiring loom) has only the essential wires
connected and then loose pins to make up the rest of the connector. This will
enable the installer to only wire-in the necessary or required wires for that
particular installation. This has been done to allow for a neater installation and
to avoid having excess wires which are not used "hanging around".
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ROAD
SPEED MODIFICATION (FREQUENCY MODIFICATION)
The road speed of a vehicle is measured via a frequency, which is proportional
to the vehicle's road speed. The SMT7 can be used to adjust the frequency to
compensate for different tyre sizes, or to remove the road speed governor.
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FREQUENCY AIRFLOW MODIFICATION
Some airflow meters transmit a frequency to the ECU, which is proportional to
the airflow. The SMT7 can map this signal (modify the frequency via the ANA2
map), thus allowing you to tune the engine's fuel.
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PWM MODIFICATIONS (FUEL, BOOST)
Some PWM signals (such as boost control) just need modification.
The SMT7 can modify a PWM signal (modify the width of the pulse) without
changing the frequency, via the ANA2 map. However, the output is a
“signal”, and needs to be amplified to drive an injector.
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TRIGGER TYPE
Most engines are different and have a different trigger wheel pattern.
The trigger signal
tells the ECU how much an engine has turned and which cylinder is next.
The SMT7 can work with the most popular trigger types i.e. 60-2, 36-1, 36-2; but
due to the intelligence of some ECUs, it is best to confirm compatibility of the
SMT7 with your vehicle. Most trigger types are applicable
to more than one
engine and manufacturer.
Confirm compatibility of the SMT7 with your vehicle
by emailing us at:
info@perfectpower.com.
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SOFTWARE
Updated Software
The SMT7 has new software since the SMT6 was designed,
with an easy to use screen layout. The screens have
more tuning versatility with extra columns featuring engine temp, air temp and
manifold pressure.
The Windows “MOUSE” operation has been supplemented with keyboard
commands for row, column and field tuning. This makes the tuning
more accessible when
operating a laptop computer in a vehicle.
All tuning fields can be labelled, and screens can be turned "off"
if not needed. This is very convenient for customizing the software to your
application.
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Eight Tuning Screens
The SMT7 has 8 tuning screens. Each screen refers to a particular tuning
operation, and it displays all vital
engine data. All setup parameters needed by the operation are located on the
screen, which eliminates the need to confirm them or to switch screens in order
to change them.
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Two Analog Maps
The SMT7 software boasts two Analog Maps. You can tune lambda up to the point
when the ECU switches closed loop off on one Analog Map,
and then you can tune the airflow meter on the second Map!
With the SMT7, you can tune ANY two analog signals simultaneously!
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Data Logging
A great feature that allows you to log all engine data and some SMT7 data and
play it back at a later stage.
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History Recording
The SMT7 records driving history in minutes, which can be uploaded at a
later stage.
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Max Recordings
You can record the maximum readings reached of RPM, Air Temperature,
Engine Temperature and
Manifold Pressure sensors.
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On-Line Help
The SMT7 Help Files Manual has been integrated into the software and
linked to the screens and subject index. This facilitates
a quick reference within the software while tuning.
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QUICK LINKS - OTHER PERFECT POWER PIGGY BACK PRODUCTS
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Go To:
NEW SMT8
Piggy-back
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Go To:
NEW Turbo Fueller
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Go To:
NEW Fuel Tuner
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Go To:
NEW XE85
Ethanol Fuel Controllers
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