Apex’i ITC Installation

 

DISCLAIMER:  I AM NOT RESPONSIBLE FOR YOU SCREWING UP YOUR CAR. 

Concept: Ignition Timing controller that allows the user to modify ignition timing from inside the vehicle.

Characteristics: Simple 5-knob face, precise timing control

Comments:

The Super ITC allows the user to modify the crank angle signal and adjust the ignition timing of the vehicle. Ignition Timing can be modified + / 15%. By using the Super ITC in conjunction with the Super AFC fuel controller, a new level of performance and flexibility can be attained which was never before possible with entry-level sub computers.

The ITC allows the user to modify ignition timing according to RPM specific levels, much like the Super AFC modifies fuel. The five knobs on the face of the unit indicate a particular RPM level at which timing may be modified.

installation:

This is a very precise installation.  If YOU screw this up don’t whine about your blown motor to me.  Follow these directions very carefully and if you don’t have a lot of experience in this then pay someone else to do it!  YOU are at your own risk.  Modifying the timing on any car can really screw it up. 

If you need pictures to help you find your ECU then check out the Greddy BCC installation.  Just remember that you are not installing the BCC you are just looking at the pictures on how to get to the ECU. 

 Here is what you will need:

 Lets get started!

  1. Remove the negative battery cable.
  2. Remove the wiring harness from the ECU. 
  3. You will need to refer to the ECU diagram located Here 
  4. Connect the orange wire with 3 outlets to the orange wire from the wiring harness of the ITC.
  5. Cut wires E9-5, E9-6, E9-7 (NOTE:  make sure to cut the wires far enough away from the ECU that you can place the connector on the wire!)
  6. On these wires they are connected from the ECU to the ITC harness only!  Do NOT “T” these wires in.
  7. Connect wire E9-7 to the last connection on the orange 3 wire extension.
  8. Connect wire E9-6 to the middle connector on the orange wire
  9. Connect wire E9-5 to the connector closest to the connection to the wiring harness to the ITC. 
  10. Cut wire E9-25 and connect the wire from the ECU to the Yellow wire on the ITC
  11. Cut wire E9-26 and connect the wire from the ECU to the White wire on the ITC.
  12. Cut wire E9-27 and connect the wire from the ECU to the Dark Blue wire on the ITC.
  13. Now we are finished with the wires going to the ECU only.  Make sure you Did NOT “T” any of the previous wires in.
  14. Place the brown 3 connector extension on the brown wire in the ITC wiring harness.
  15. Connect the wire E9-7 heading AWAY from the ECU towards the engine compartment (remember you cut this wire in half earlier) to the brown wire connector closest to the connection to the ITC harness.  (If this sound complicated think about it for a minute….)
  16. Connect the wire E9-6 heading AWAY from the ECU towards the engine compartment to the middle connector on the brown wiring extension.
  17. Connect the wire E9-5 heading AWAY from the ECU towards the engine compartment to the last connector on the brown extension.
  18. Connect the wire E9-25 heading AWAY from the ECU towards the engine compartment to the Green wire.
  19. Connect the wire E9-26 heading AWAY from the ECU towards the engine compartment to the Pink wire.
  20. Connect the wire E9-27 heading AWAY from the ECU towards the engine compartment to the light blue wire. 
  21. OK.  Now you have finished wiring up everything except for power and ground.  Quaddruple check your connections.  You do not want ANYTHING to be loose or half ass done.
  22. The next two wires are going to be spliced in.  I suggest using a good quality tap or using a butt connector. 
  23. The black cable (GROUND) will be connected to ECU wire E9-69
  24. The red cable (12V+) will be connected to ECU wire E10-31

 OK,  Now you have all of the wiring done up.  I really want to stress to every one that this needs to be a high quality installation.  This isn’t like installing a BCC this can really mess up your car. 

 Reconnect the wiring harness to your ECU.  Make sure all of those wires are tight.

 Next make sure that on the back of the ITC head unit that the Car select dial is set at 0 and All of the dip switches should be UP. 

 Plug the harness into the ITC.  Reconnect your battery cable.  Leave everything at 0 and hopefully start your car. 

 As far as tuning goes I recommend you leave everything at 0 until you are on the dyno with an experienced tuner, Air/Fuel monitoring, etc.  You will want to retard the timing in the high end under boosting conditions.  But that is all I will give.  Do NOT email me and ask me what I set mine at because my car isn’t anything like yours :P

 I don’t know how much HP this mod will make if any.  It will help reduce head pressure and could even solve some high end detonation problems most Supra’s have.  This would be especially helpful if you have a single turbo. 

 

Questions/Comments Email me

 

supra_su.gif (5342 bytes)