PP-SMT Piggyback UniChip
The SMT PIGGY-BACK ECU has been designed to answer the
question “how is my car going to get tuned”?
'piggyback' ECU is designed to correct fueling and timing. This is a
wire in unit that can be sent to meet the needs of your car. The SMT is
simple to install, (must be soldered in) and includes wiring diagrams,
and installation instructions. The SMT can be programmed by you using
the 'tuning cable'.
This is one of
the best piggyback systems on the market today. It has more options
than other systems, including its capable of controlling more newer
engines, engines with multicoil ignition setups, and has new tuning
features like temperature modifications and O2 sensor programing.
SMT-i Kit -
includes Fuel/Ignition tuning, comm cable, wiring harness, bypass
connector and additional injection control.
Functions are - RPM/TPS/LOAD/Etemp activated switch, Dual Mapping
tunable/selectable, O2 sensor metering and controlling, Datalogging and
playback feature, boost control solenoid tuning (on selected vehicles),
SMT - Frequently Asked Questions - F.A.Q.
WHAT IS THE SMT UNIT?
WHO MAKES THE SMT?
A company that specializes in engine management systems located in
South Africa Digital Data Systems (DDS). All
products made by DDS are marketed by Digital Technology (a subsidiary
of DDS). Perfect Power is the brand name of the automotive products
manufactured by DDS but marketed by Digital Technology.
WHAT MAKES THE SMT SPECIAL?
The SMT has the ability to intercept certain signals going or coming
from the car's facotry fitted ECU, allowing you to modify them so you
can have control over the engine parameters.
WHAT CAN THE SMT DO FOR ME?
Right out of the box it can control Fuel AND Ignition Timing on almost
ALL fuel injected engines today. Other options include additional
injector control, activation switch (Nitrous, Vtec, Vvti, etc.), O2
sensor metering and tuning, temperature compensation (allowing for
better cold start after tuning), etc.
HOW DO YOU PROGRAM THE SMT?
The main tool for tuning the SMT is with a laptop and specific tuning
WHAT BENEFITS DO I GET FROM THE SMT UNIT THAT I CANT
GET FROM OTHER SIMILAR SYSTEMS?
The SMT's software is designed to give you far better resolution
(tuning points) than most piggyback systems in the market, adjustments
are precise and straight forward, and the results speak for themselves.
WHAT CARS CAN THE SMT BE INSTALLED ON?
Right now the current model SMT can be installed in practically ANY
vehicle with an electronically controlled fuel injection system. Some
cars may not be able to benefit from Ignition tuning but fuel tuning is
always easy to do.
CAN I INSTALL A TURBO ON MY N/A CAR AND TUNE IT?
Yes, the SMT can provide the additional fuel, and where applicable,
retard timing for boosted engines.
MY N/A CAR WILL THROW A "CHECK ENGINE" LIGHT UNDER
Some N/A cars ECUs turn on the "Check" light when they detect boost and
go into "safe mode". The SMT has a built in feature to correct this.
WHAT CAN BE PROGRAMMED WITH THE SMT?
The SMT is programmed three dimensionally for optimum results, using
throttle position, load sensor and RPMs it can be tuned for all engine
conditions, light load, full load or wide open throttle, etc.
CAN I CONTROL
VTEC WITH THE SMT?
Yes, the SMT has an activation feature that can be configured to do
just that, activate any given device either by RPM, TPS, Load or engine
temperature. This function can also be used to drive other variable
timing devices like Nitrous solenoids, shift light, etc., please be
aware that there is only 1 activation switch built into the unit, so if
you must decide what to use it on.
AFTER I TUNE MY ENGINE ITS HARD TO START WHEN COLD,
WHAT CAN I DO?
The SMT has an input for an intake temperature sensor (0-5V range). In
the software there is a scale where you can calibrate the amount or
percentage that the SMT adds or takes out fuel, allowying for better
DOES THE SOFTWARE RUN UNDER DOS OR WINDOWS?
The SMT software has a DOS version and a Windows version. The Windows
version can run on Windows 95, 98, ME, 2000 and XP.
DOES THE SMT HAVE DATALOGGING?
Yes. It has a datalogging and playback feature. You can view the values
it has recorded or you can use the playback feature that lets you
visualise all the parameters that occurred in real time.
HOW CAN I VEW THE DATALOGGS?
The SMT creates a special file in which all the parameter values are
stored, once you create it you can import it into MS Excel so you can
view and even graph the resulted log.
DOES THE SMT COME WITH BUILT IN MAPS?
Yes, the SMT comes preloaded with a base map for your car, to get you
CAN I SAVE WHAT I HAVE DONE ON MY LAPTOP?
Yes, all Tune Maps can be saved to the computer for future retreival
and reloading or for reference.