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Discussion Starter #21
I'm not sure about the n15 ECU, I know there are some stock ECUs (u13?) that has them, but I can't recall exactly. I'm using an aftermarket ECU on this setup.
 

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S13 SR20DET ECU (early ones) have 4 wires, one for each cylinder for ignition. I have one, I need to find the ECU code to give you to look for them.
 

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I posted this on G20.net, but I figure others can use this information on an SR20DE motor level. I documented and put this together because I couldn't find a real HowTo setup a Coil on Plug system for the G20 (SR20DE/VE essentially). There is a lot of information (and I do mean A LOT) on SR20forum and the dash, but nothing wrapped up easily into one thread. So here goes, I'm assuming that if you are performing this swap, you know how to do basic wiring and have a system to utilize the CAS and COP systems. I'm also assuming you have a 20V valve cover to match, but I've placed the valve cover and gasket part numbers below as well.

Big thanks to Charles (Snickers), Ben Fenner (BenFenner), Justin (JustinP10) and Tony Szirka (my tuner and close friend at UMSTuning here in Phoenix, AZ) for helping to get this all pooled together.

Chassis: P10/P11
Engine: SR20VE

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Legends

---CAS Wiring Legend:

  • Connector Pinout
    • 1 | Crank Angle Sensor 180* (REF) Signal
    • 2 | Crank Angle Sensor 1* (POS) Signal
    • 3 | Power
    • 4 | Ground
  • Ignition Wiring
    • 5 | Ignition Power
---Coil Pack Wiring Legend:
  • IB | Coil Signal
  • G | Ground
  • + | Power
---Relay Wiring Legend:
  • 5 | Ignition Power
  • 6 | 12v Constant Power (Battery)
  • 7 | Power to Coil Packs
  • 8 | Ground
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Wiring Diagrams

---Nissan SR20VE 20V Crank Angle Sensor Diagram/Pinout:




  • Pin 60 | Ground
  • Pin 62 | Crank Angle Sensor 1* (POS) Signal
  • Pin 81 | Crank Angle Sensor 180* (REF) Signal
  • Pin 109 | Power
---Nissan S15 Coil Pack Diagram/Pinout:


  • Pin 1 | Coil Signal
  • Pin 2 | Ground
  • Pin 3 | Power
---Nissan SR20DE Ignition Diagram/Pinout:


  • B/R Wire | Ignition Power
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Wiring Instructions


  • Cut 8 pin DE harness connector off, remove distributor
  • Connect CAS
  • Use the existing harness wiring to connect the new 20V CAS (see photo and legend for sequence):
    • Use sourced connector (see part numbers for recommended connector)
      • 1 | Crank Angle Sensor 180* (REF) Signal
      • 2 | Crank Angle Sensor 1* (POS) Signal
      • 3 | Power
      • 4 | Ground
  • Cut ignition wire (5) from secondary distributor harness, this will wire/run into power relay
  • Install and wire a relay as follows:
    • 5 | Ignition power (see above image)
    • 6 | 12 volt constant power (to battery)
    • 7 | 12 volt power to coil packs
    • 8 | Ground to chassis
  • Install coil packs into VC
    • Use sourced coil pack connectors
    • Wire coil pack(s) as follows:
      • IB | Coil Signal
      • G | Ground
      • + | 12 volt power (from relay)
  • Wire all coil pack 12 volt constant power together, run to relay wire 7 (see above)
  • Run remaining coil signal (IB) wires to ECU or trigger device
B13 AEM V1 and V2 Wiring Pinout:


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Part Numbers


  • Coil Interface Connector | $10 shipped (click here)
  • Coil Pack Connector | $8 shipped (click here)
  • Coil Pack S15 Harness | 24079-91F00 | $46 - $65 (Contact Gspec or click here)
  • Coil Pack (S15) | 22448-91F00 | $35 - $60 shipped (click here)
  • Crank Angle Sensor Connector | WRS-CAS-NSN | $10 shipped (click here)
  • Crank Angle Sensor (P12 20V) | 23731-8H60A (New Part Number) | 2371-8H600 (Old Part Number) | $325 - $500 (click here)
  • Four (4) pin relay | 1362A11
  • Valve Cover (20V VVL) | 13264-AW01A | $200 - $300
  • Valve Cover Outer Gasket (20V VVL) | 13270-2J201 | $25
  • Valve Cover Inner Gasket (20V VVL) | 13271-65F00 | $10
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Connector Photos (for reference)


  • Crank Angle Sensor 4 Pin
  • Coil Pack Connector
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Final result

i know that this is an old post, i actually just recently became interested in doing a COP setup because i recently saw a video by Burton Racing that does a honda direct fit COP setup with existing standard ECUs. I have 2 questions.
1- because i am on a budget build can i use my existing distributor instead of a VE CAS seeing that the internals are the same or fairly similar?

2- based on the diagram and schematic you posted here am i correct in assuming that all 4 coils are firing at the same time because all 4 are connected to 1 coil firing signal wire (IB wire)?

thanks
 

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Discussion Starter #24
i know that this is an old post, i actually just recently became interested in doing a COP setup because i recently saw a video by Burton Racing that does a honda direct fit COP setup with existing standard ECUs. I have 2 questions.
1- because i am on a budget build can i use my existing distributor instead of a VE CAS seeing that the internals are the same or fairly similar?

2- based on the diagram and schematic you posted here am i correct in assuming that all 4 coils are firing at the same time because all 4 are connected to 1 coil firing signal wire (IB wire)?

thanks
1 - No, the existing distributor does not have the proper timing rotation for the CAS and ultimately timing into an ECU.
2 - No, if that was the case then the timing would be inaccurate for each cylinder. As you can see in this photo, each coil has its own pin:

 

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Yeah you need a new ECU.with more ignition drivers. Even if you ran wasted spark you'd still need more than stock.
 
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