Applications Subaru EZ30
Draft. Trigger offset has not been confirmed on a running Race Core install. Pins marked TBD are unknown — do not guess them. A wrong decoder or firing order can destroy the engine.
Subaru EZ30
3.0 L H6 in Legacy, Outback and Tribeca. rusEFI lists SUBARU_EZ30 as its own variation of 36-2-2-2 — use that mode, not a generic 36-1 and not the early EJ 6+7. Published firing order is 1-6-3-2-5-4. Port injection. Later EZ30D / EZ30R adds AVCS and DBW.
Recommended: F7, or V4 if you only need six coils and you accept a TBD pin map. DBW cars stay on F7. Six logic coils. Do not use the four-cylinder EJ firing order.
Status: draft. Trigger offset has not been confirmed on a running Race Core install.
- Cylinders: 6
- Displacement: 2999 cc
- Firing order: 1-6-3-2-5-4
- Orientation: Firing order 1-6-3-2-5-4. Cylinder 1 follows the EJ20 note: front cylinder on the right-hand bank. Confirm on the covers before offset. An H6 numbered as a V6 1-2-3-4-5-6 will not run.
Variants
| Variant | Years | Trigger | Notes |
|---|---|---|---|
| EZ30 early | 2000–2002 class | SUBARU_EZ30 | Cable throttle on many, port injection, 2999 cc. |
| EZ30D / EZ30R | 2003–2009 | SUBARU_EZ30 + AVCS cams | AVCS, DBW, still port injection. Not the later EZ36. |
Recommended pin assignment (Race Core F7)
Pins below are the library default Race Core F7 map — the same AMPSEAL landings as the verified 1UZ-FE, 2JZ-GTE and LS1 notes. Core EFI V4 and Micro Core cavity numbers are TBD. If a pin is not in this table, it is TBD. Do not guess a spare.
| Pin | TunerStudio | Function |
|---|---|---|
| B5 / B13 | VR 1+ / VR 1− | Crank, if the sensor is 2-wire VR |
| B10 | Digital 1 | Crank, if the sensor is 3-wire Hall |
| B4 / B12 | VR 2+ / VR 2− | Cam VR |
| B1 | Digital 2 | Cam Hall |
| A3 | Lowside 1 | Injector cylinder 1 |
| A15 | Lowside 2 | Injector cylinder 2 |
| A4 | Lowside 3 | Injector cylinder 3 |
| A16 | Lowside 4 | Injector cylinder 4 |
| A5 | Lowside 5 | Injector cylinder 5 |
| A6 | Lowside 6 | Injector cylinder 6 |
| A35 | Ign 1 | Cyl 1 logic coil |
| A34 | Ign 2 | Cyl 2 logic coil |
| A22 | Ign 3 | Cyl 3 logic coil |
| A33 | Ign 4 | Cyl 4 logic coil |
| A32 | Ign 5 | Cyl 5 logic coil |
| A31 | Ign 6 | Cyl 6 logic coil |
| A2 | Highside 1 | Cam oil-control valve (PWM) |
| A1 | Highside 2 | Second oil-control or lift solenoid |
| B7/B6 + B15/B8 | ETB 1 ± / ETB 2 ± | DBW motor. Not a stepper as well. Pedal and TPS tracks: follow the APP and ETB notes |
| C20 | Analog Temp 3 | CLT |
| C30 | Analog Temp 2 | IAT |
| C13 | Analog Volt 1 | MAP 0–5 V |
| C24 | Analog Volt 2 | TPS 1 |
| C34 / C35 | Knock 1 / Knock 2 | Knock, one per bank |
| A20 | Lowside 10 | Fuel-pump relay coil |
| A21 | Lowside 12 | Main-relay coil |
| A12 | Lowside 15 | Radiator-fan relay coil |
| B17 / B16 | CAN 1 H / L | Dash / wideband |
| B18 | Battery Sense | Ignition-switched 12 V (5 A fuse) |
| B23 | +12 V MR | Main-relay 12 V into ECU |
| A17 A18 A24 B14 B19 B20 | Power GND | Engine block → battery − |
| C9 / C21 / C32 | 5 V Sens 1 | MAP, TPS, pedal 1 |
| C1–C8, C29, C31 | Sensor GND | 0–5 V and thermistor returns |
Trigger
Select SUBARU_EZ30. The public list describes it as the EZ30 variation of 36-2-2-2. If the composite does not resemble that pattern, stop and log it. Do not fall back to 36-1.
Crank
| Decoder | SUBARU_EZ30. Hall or VR per the sensor on your engine. |
Cam
| AVCS | Digital 2 for the first cam. Second cam pin TBD. |
TunerStudio
| Setting | Value |
|---|---|
| Trigger / wheel type | SUBARU_EZ30 |
| Use only rising edge | VR: typically yes on MAX992x. Hall: as logged |
| Invert primary | No — swap VR wires first |
| Firing order | 1-6-3-2-5-4 |
Offset: Light on cylinder 1 after the bank is identified.
Injection
Six high-Z port injectors, sequential. EZ30 is not direct injection. Meter the injectors. Top-feed.
| Impedance | High-Z expected. Confirm. |
Ignition
Six logic COP, cylinder-number order. Dwell 2.0–2.5 ms. Firing order 1-6-3-2-5-4 in software.
| EJ order | 1-3-2-4 is the four-cylinder note. Do not use it here. |
Idle
Early cable idle valve pin TBD. EZ30R DBW uses F7 H-bridges and the ETB / APP notes. AVCS oil valves on Highside 1 and 2 when both banks are controlled.
First start
- Load the matching variant configuration in TunerStudio before the harness is live — injectors and coils stay disconnected until the decoder is confirmed.
- Fuel pump fuse out. Coils unplugged or spark outputs disabled. Crank. Open Diagnostics → composite / high-speed logger.
- Confirm crank teeth are even, the missing-tooth (or named pattern) is a single clean gap, and cam is one pulse per two crank revolutions for sequential four-stroke.
- RPM during cranking should sit in the 150–350 rpm band. 0 rpm or 12,000 rpm means the decoder is lost — polarity or wheel type, not offset.
- Lock timing to a fixed 10° (idle control off). Timing light on cylinder 1. Change trigger offset until the damper agrees with 10°.
- Recheck at ~3,000 rpm. If timing walks with RPM, it is VR polarity, a delayed Hall, or the wrong decoder — not offset.
- Enable spark. Confirm a healthy burn (timing light or plug colour) with fuel still disabled.
- Enable fuel. Prime, then crank. Catch the first idle on a rich-safe VE, then lean toward stoich at idle.
- Only then enable closed-loop idle, VVT, boost and traction. A base map is a starting point, not a dyno tune.
A base map is a starting point, not a dyno tune.