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SMT-FTX Technical Manual - Introduction

SMT-FTX TECHNICAL MANUAL

Perfect Power Online Manuals.

 

Support for your SMT-FTX Unit.

INTRODUCTION

Welcome to the Perfect Power LetRipp II SMT_FTX Technical Manual.

Please note: The SMT_FTX is a plug and play FUEL TUNER, it cannot be used as a Piggy-Back controller. It is used for Fuel tuning only.

Please note: The SMT_FTX cannot be used on vehicles with direct injection.

 

 

FEATURES

 

  • Tuning Airflow or Manifold pressure #1
  • Tuning Airflow or Manifold pressure #2
  • Tuning Narrow band AFR (Lambda)
  • Tuning Wide band AFR (Lambda)
  • Tuning Fuel via OEM injectors (Plug and Play)
  • Tuning Fuel via an Extra Injector
  • Retarding/Advancing Ignition
  • Controlling TURBO boost
  • Switching things ON/OFF
  • Regulating AFR with a control loop
  • Protecting the engine
  • Matching inputs to your engine
  • Standard USB 2.0 communication
  • Tuning Wide and Narrow AFR sensors simultaneously
  • External display connection

 

 

CONNECTIONS

 

The SMT_FTX has 5 connectors and a USB communications port.

 

 

PIN-OUT TABLE

 

NOTE: The GROUND pin (1) on the 14pin CONNECTOR is conducting CURRENT and therefore must be connected via heavy gauge wires to chassis.

SMT-FTX Fuel Tuner - Pin-Out Table

 

SMT-FTX MAIN CONNECTOR
(20 Pin Connector)

 

Pin Signal Description
1 GND Ground, Chassis
2 ANA1IN 0-5V Analogue #1 input
3 AMPIN 0-5V AMP sensor input
4 TPSIN 0-5V TPS input
5 ENGTIN 0-5V Engine Temperature input
6 CRIN Crank signal input
7 SP1 SET POINT output drive 1A
8 MAPSW Map switch input, open = MAP A
9 NAFRIN Narrow AFR sensor / Analogue #2 input
10 CROUT Crank signal output
11 WBMOD Wide band LSU-4 modification in/output
12 A1OUT 0-5V Analog #1 output
13 NAFROUT 0-5V Analogue or 0-1V AFR output
14 SP2 SET POINT output drive 1A

 

 

SMT-FTX INJECTOR CONNECTOR
(8 Pin Connector, three)

 

Pin Signal Description
1 INJ1 Injector activation
2 +S Injector supply
3 +S Injector supply
4 INJ2 Injector activation
5 ECU#1 ECU injector #1
6 ECU#1 ECU injector #1
7 ECU#2 ECU injector #2
8 ECU#2 ECU injector #2

 

Note: The numbers in brackets indicate the second connector

 

 

SMT-FTX DISPLAY DRIVE

 

 

Pin Signal Description
1 +S DISPLAY POWER ~ 12V
2 DISPOUT Display signal output