Dual Curve products are obsolete.
We have left the instructions here for reference.

 

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Instructions
5952 Digital Fuel Controller
56531 Ford Ignition Start Control
5929 GM OBD II Integrated Processor V2.0
Obsoleted Product Instructions
4046 O2 Fuel Control II
40622 GM Timing Recurve, CNG/LPG, Ford 84-91
4066 Ford TFI/DIS Timing Optimizer,LPG/CNG
41132 GM V6 Injector Interceptor
4115 GM Injector Simulator
4129 Decel Control Module
5908 Ford OBD I Integrated Processor
5928 GM OBD II Integrated Processor
5920 GM Integrated Processor
5934 Dodge OBD II, Integrated Processor
5935 Chrysler/Dodge Integrated Processor
59362 Dodge Integrated Processor II
59363 Dodge OBD II Mega Processor I
5945 Ford OBD II Integrated Processor
8789-6M Super Fix I, 1990-1994 GM's
8696 Ford Support II
8695 Ford Conversion Support IV
5918 Ford Integrated Processor III
4053 High flow 3
4121 Chrysler Support 1
4121-4122 Chrysler Supports Addendum
5910 Ford Integrated Processor
5914 Ford EDIS Integrated Processor
5916 Ford Integrated Processor for SEFI Fords
5922 GM CNG Boss
5924 Replaced by PN5929
5930 Chyrsler Integrated Processor
  Addendum
  Addendum 5931
5936 Dodge Integrated Processor
8694 Ford Conversion Support
87896 Super Fix I
8790-92 LPG/Gasoline DualCurve Ignition
8795 Universal Dual Curve Ignition
5916 Ford Integrated Proccessor II
Instrucciones
56531- Control De Encendido De Arranque Ford
5952 - Controlador Digital De Combustible

UPDATED - 6/21/11