Short description of the project I'm working on.
I'm getting ready to order soon.
Thanks for comments and suggestions
- 1988 Alfa Romeo 75/Milano
- Alfa Romeo 164 v6 engine
- 3.0 60 degree even fire V6.
- Two valves per cylinder overhead cam.
- Motronic system stock
- Stock 60-2 crankwheel VR-trigger
- cam trigger available ?
- Ill fabricate that. I have a pickup.
- cam trigger available ?
- intake system replaced with dual plenum system.
Target features:
- 2 EGT (Not installed initially)
- WB02
- active types, possibly wasted spark
- what is the exact type ? Do you know for sure it needs less than 10mA input current on the logic signal input ?
- Is the 10ma limit sufficient for typical active coils? If so I can go ahead with the ECU config I have and make final coil decision later.
- I'd definitely choose wasted spark coils. 3x higher spark energy possible, so even after 10% lost (due to wasted spark), you end up with a much more durable system that is easier to get life into and harder to kill.
- The VAG COPs are problematic (input, max output spark energy and reliability-wise), even if they are perfect mechanical fit for your cylinder head. VAG cops might be appealing with their low purchase price, but most pays a higher price learning that wasted-spark is better (except maybe for the 5cyl engines).
- Ok, VAG COPs are out then. Ill see whats available here (USA) and post some candidates.
- what is the exact type ? Do you know for sure it needs less than 10mA input current on the logic signal input ?
- High Z injectors
- Offboard MAP sensor
- would you choose onboard if we had 115kPa sensor option ? (we do have the 115kPa sensors, and the small daughter adapter-PCB ready soon).
- In my config the ECU will be fairly distant from the manifold and makes the vacuum hose too long.
- The advantage of onboard MAP is +1 analog input.
- Im not clear on what +1 analog means. Is that an additional volt of range?
- would you choose onboard if we had 115kPa sensor option ? (we do have the 115kPa sensors, and the small daughter adapter-PCB ready soon).
- Crank Sensor VR
- Cam Sensor VR (audi trigger)
Assembled v3.3 controller
- PowerFlyback yes
- primary_trigger VR
- mounting-style screws
- MAP connection offboard(electronic)
- LCD and PS2 yes
- Knock and EGT yes
- ignition driver 2+6
- 1-wire interface no
- secondary_trigger auditrigger
VEMS parts to be ordered with control
- 2 x K-thermocouple connector
- 1 x Assembled v3.3 controller
- 1 x Sealed sensor connector
- 1 x Econoseal18-harness
- 1 x Econoseal36-harness
- 10 x Injector connector 2pin
- 1 x Wideband O2 sensor
- 1 x Wideband connector
- 1 x LCD4x20
- 1 x MAT sensor
- 3 x Injector connector 3pin
| ECU Pin Assignments | |
| Function | Econoseal Pin |
| Sensor power 5V | EC36-28 |
| Sensor ground | EC36-26 |
| Power ground | EC36-5 batt-gnd |
| Power ground | EC36-21 batt-gnd |
| Power ground | EC36-22 batt-gnd |
| Power ground | EC36-32 batt-gnd |
| Flyback | EC36-23 (Injector return) |
| injector 1 | EC36-7 (Injector A) |
| injector 2 | EC36-19 (Injector B) |
| injector 3 | EC36-8 (Injector C) |
| injector 4 | EC36-20 (Injector D) |
| injector 5 | EC36-9 (Injector E) |
| injector 6 | EC36-18 (Injector F) |
| CLT | EC36-14 (CLT Coolant Temp) |
| IAT | EC36-2 (Intake Air Temp) |
| TPS | EC36-1 (TPS signal) |
| TPS 5v | EC36-29 (TPS +5v) |
| IAC PWM | EC ******* |
| Crank sensor (vr) | EC36-27 |
| Cam sensor (vr) | EC18-13 |
| coil1 | EC36-35 (Coil #1) |
| coil2 | EC36-33 (Coil #2) |
| coil3 | EC36-34 (Coil #3) |
| coil4 | EC36-36 (Coil #4) |
| coil5 | EC36-11 (Coil #5) |
| coil6 | EC36-12 (Coil #6) |
| Fuel Pump Relay | EC36-15 |
| Fan Relay | EC36-16 |
| Control Relays (2) | EC36-30 (Injector/Coil Pwr) |
| knock signal A | EC18-2 |
| knock signal B | EC18-3 |
| MAP (offboard) | EC18-6 |
| nernst_cell | EC18-13 |
| heater - | EC18-18 |
| pump - | EC18-7 |
| pump + | EC18-9 |