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'''This page documents ECU features to be utilised in the EJ25 N/A DOHC installation''' ---- || ''Feature'' || ''Spec'' || ''Hardware utilised'' || ''Software support'' ||''Priority''|| || Sequential injection || 4 x 11.5 Ohm injectors || 4 x injector drivers|| Yes || - || || Wasted spark ignition || Diamond F-569 coilpack. 0.62 - 0.76 Ohms primary, 17.9 - 24.5 K-Ohms secondary. || 4 x ignition drivers|| Yes || - || || Stepper idle control || || Stepper outputs || Yes || - || || Fuel pump || || Fuel pump relay output || Yes || - || || MAP || 0-5V range || OEM external pressure sensor (Auto and Turbo models only?) || Yes || - || || LCD || || 4x40 LCD output || Yes || - || || Dual wideband lambda || Bosch LSU || WBO2 channels 1 and 2 || Partial (comparison and range testing should be done) || Low || || EGT || || EGT sensor || Partial (is this used for more than display?) || Low || || Knock sensor || "AC voltage output" || Knock channel || Partial (is this used for more than display?) || Low || || Cooling fans || || 2 relay outputs || Partial (only 1 fan switch is supported) || Medium || || Subaru crank trigger || 87/32 degree signal, TDC 10 before. Magnetic VR || VR 1 || No || High || || Subaru cam sync || 1,2 or 3 pulses to determine cylinder, so order is important (eg, to know cyl. 1 vs cyl. 4). Magnetic VR || VR 2 || No || High || || EGR Valve || Solenoid || Misc driver 1 || No || Medium || || PCV Valve || Solenoid || Misc driver 2 || No || Medium || || Pressure Select Valve || Solenoid (manifold/barometric select) || Misc driver 3 || No || Medium || || EVAP Valve || Solenoid || Misc driver 4 || No || Medium || || Warning Lamp (CEL) || Dashboard lamp || Misc driver 5 || No || Low || In [http://en.wikipedia.org/wiki/MoSCoW_Method MoSCoW] parlance: High = Must Have, Medium = Should Have, Low = Could Have. [dnb]Very interested to see how this goes... The MAP sensor is indeed only present on turbo cars. * And 95-on autos, although I'm not really sure why... The injectors are low impedance IIRC - however resistor packs can get around this. * Turbos are likely to be low impedance, but I've measured the resistance on my 2.5 NA as 11.5 Ohms. **Any idea whay size these are? Low impedance injectors aren't ideal for VEMS... Why did Subaru use side feed injectors??? Supporting the VR trigger itself is no problem, but the crank trigger pattern does not seem straight forward to me... I do have a source for direct replacement 36-1 wheel though! * Very cool. That's Plan-B, as I'd prefer to go P'n'P. **With you on the P&P, but I'm just covering all eventualities (and taking the 'easy' option for me.) What will you use the pressure exchange solenoid for? Baro correction? * Possibly. I was mostly hoping to have control to ensure I've reading the correct pressure source (eg, the manifold). **I was going to remove this solenoid from mine and do the plumbing directly! * Where were you going to put the MAT sensor? This is only present as standard on some WRX STIs if I remember correctly, and the sensor placement is far from ideal for VEMS. *Evap/carbon can thingy would be very uuseful for a number of my projects - the sooner this is available the better. I have proposed an algorithm but not had time to test things yet. It can be different to the standard system since we have good wideband control over the fuelling. *Not sure why you need 2 wideband channels on the Subaru, however this would be a VERY useful feature to have for the v8 users here... *On my turbo, the PCV is passive and requires no ECU involvement. (It's replaced with an oil catch system now too)
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