Originally Posted by tony_2018

Do some research, a thread was created by djslim23 who had swapped one of these. I was a part of that thread.

Originally Posted by djslim23

I got my p2j ecu from Hmotors for those interested...so don't pm me lol

So, since there seems to be a relatively strong interest in this thread, I figured I'd start from square one..

A brief summary of what my setup includes:

1) *All in a '99 Civic LX Sedan*
2) 96-98 JDM D15B 3-stage vtec motor (99-00 are 3-stagers as well)
3) 96-00 D16Y5 m/t intake manifold, reusing all sensors from d15 (comes out of 96-00 civic HX m/t)
4) 99-00 D16Y7 engine harness (existing harness)
5) 96-98 JDM P2J-003 ECU (connected to 99-00 harness using cheap conversion harness)
6) My own wiring: EGR, knock sensor, IACV fix, vtec, and o2 sensor fix.
7) EGR solenoid for vacuum line leading to EGR (IN PROGRESS)

3/19/11 Update:
No CEL, only a slight bog when cold, but I attribute that to a slight vacuum leak that I have been putting off fixing (between intake mani and head).

Parts and Prices So Far...(in order (that I realized I needed it/them ))
Random things for swap - $50
Engine - $850
ECU - $200
Subharness (OBD2a to OBD2b) - $40
New soldering iron and wire and such stuff - $80
D16Y5 intake manifold and throttle body - $150 (hard to find in 5spd, out of Civic HX)
2-Wire IACV Plug - $10

Total so far: over $1300

Tech sheet: ---More to be added--- lazy right now

OBD2A IACV fix and Pinout


Everything that needs to be done:

1. Acquire a 96-00 d15b engine

2. Acquire a P2J-xxx ecu (P2J-003 for OBDIIa M/T, P2J-J11 for OBDIIb M/T, P2J-J61/J62 for ?)

3. See if your intake manifold has a 2 or 3 wire IACV (plastic doo-hicky on the back of the intake manifold)
------a. 3-wire IACV means you have an engine out of an automatic Civic Vti/Vi-RS and it will not work with manual ECU.
------b. 2-wire IACV means you have an engine out of a manual Civic Vti/Vi-RS (quite rare), and it will not work with automatic ECU.

*One way to solve this is to swap out the intake manifold completely, and since JDM d15b's aren't laying around in many junk yards, you'll probably need to go with a different one that fits. The d16y5 shares a similar if not the same intake manifold since it is a VTEC-E motor and has the EGR crap on it. You can find those in a 96-00 Civic HX (a little hard to find). Basically, you need to match manual IM to manual ECU and auto IM to auto ECU.* -I am still on this step and will need to update once I find more info..

4. Swap Motors and do regular swap related hooplah except for the wiring

5. Wiring
-----a. VTEC (2 solenoids)
++++++++2nd stage (16 Valve Mode) -- A21--red/green? test...
++++++++3rd stage (Vtec, same pin as USDM obd2a) -- A08--red/green? test...

b. EGR -- D9 (White/Black wire)
----- *Yellow/Blue wire taps into TPS sensor wire of same color
----- *Green/Black wire goes to junction connector in middle of engine bay
----- ***See update above regarding solenoid

c. O2 sensor (single wire) - depin your current O2 sensor plug on the plug side, then slide the pin in of the single wire sensor so that it lines up with the white wire on the engine side

d. Knock sensor

e. Lean Burn Mode (Econo Light in certain clusters) -- A30 (White/Red) to What pin location on the EK cluster???

When I get the correct info on this stuff, I'll edit it and leave it as a writeup since I've gone through hell and back finding out what I know so far.

Constantly Updated!