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SMT-FTX Technical Manual - Tuning Fuel via OEM Injectors (Plug and Play)

SMT-FTX TECHNICAL MANUAL

Perfect Power Online Manuals.

 

Support for your SMT-FTX Unit.

TUNING FUEL VIA OEM INJECTORS (PLUG AND PLAY)

The SMT-FTX has 6 OEM injector circuits. All are controlled by one map.  The injectors are activated by sensing that the OEM ECU injects, measuring its length, modifying it and outputting a different (Longer or Shorter) injector pulse in its place to the engine.

 

The OEM Injection maps allow the MODIFICATION of the original ECU injection length. The following principal computation takes place:

 
Injection modification    =  Main map entry
 + Engine temperature map entry
 X AMP map entry
 + 100 %
 
Injector output signal length    =  Injection modification (%) of ECU injection
 

Thus injectors ON time can be from 10% to 200%.
A map entry of ZERO results in NO modification =100% and means that the input from the ECU is copied to the output.


Note: Pin 1 of 14 ground MUST be connected for the unit to work.

SMT-FTX Fuel Tuner - F1 - OEM Injection

SMT-FTX Fuel Tuner - Injector #1 Wiring - Basic Installation

 

FIGURE 6  INJECTOR NO.1 WIRING

 

SMT-FTX Fuel Tuner - Injector #1 Wiring - Advanced Installation

 

MAIN (RPM/THROTTLE) MAP

Enter a number in the range from -90 to 100 (%) on the main map. An entry of zero does NO modification.

 

 

ENGINE TEMPERATURE MAP

The entry in this map is ADDED to the main fuel map entry. Entries range from -90 to 100%.

 

 

AMP SIGNAL TABLE (OPTIONAL)

A multiplication (scaling) factor in the range from 0.01 to 9.99 can be used. An entry of 1.00 will do no multiplication (scaling) to the sum value of the above maps.