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Banned
2000 2.5RS, '06 EJ207 swap
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92 Posts
I just traced the ECU pins, there are only circuits for 2 coils. So no possibility of running 4 coils as they were meant to unfortunately.

Is it possible yet to scale the MAF for like a stock wrx one? which is roughly 375 at 5v vs the 200 that's probably gonna come up pretty quickly once the fueling is in order. I didn't notice any IAT scaling or compensations either. That would be nice and probably slightly necessary for different mafs. But I like to run a gm iat post intercooler anyways even on maf cars so I can use iat ignition compensations to pull timing when the intercooler is heatsoaked.
99 2.2L MAF ECU can be rescaled up to 429 g/s. Use 'MAF Limit' to set the overall scaling, then plug your WRX values into 'MAF Calibration'. Also don't forget that 'MAF Bias' gets subtracted from the looked up values. I usually just set 'MAF Bias' to zero so I don't have to think about it.

The MAF ECUs don't use the IAT. I don't even see the wire for it in the wiring diagram. Only the JDMs read the sensor and they only use it for boost control adjustments. SD ECUs use it of course as it is integral to the main fuel calculations. It may be possible to reflash a MAF ECU to SD and use with the GM IAT, but again might have the missing circuitry problem again. I don't have a MAF ECU on hand to inspect.
 

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2000 2.5RS BRP
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1,181 Posts
Discussion Starter #23
Glad to see some more of you jumping in. I'm not sure about emissions testing with the pass monitors. Some skip the OBD check and concentrate on the sniffer. Depends on the state, though.

I find I can only run romraider logger or the tuning software. Both at the same time fight over the bluetooth device.

This is working fine as a compromise setup for my little aspirated animal. Mike is a hell of a computer geek and I know enough to be dangerous. Some more computer geeks in the mix would be a healthy thing.
 

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Banned
2000 2.5RS, '06 EJ207 swap
Joined
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92 Posts
Version 1.0.2 is out! https://lambdatuning.com/support/tuner/

I added the latest dealer reflash updates. These cover SD EJ251/EJ252 ECUs. Here are the ECU codes:
AH966 Impreza MY00-01 MT/AT
AF408 Impreza MY02 MT
AG73F Legacy MY00-01 MT/AT
AG74F Outback MY00-01 MT/AT
AJ501 Forester MY00-02 MT
AJ511 Forester MY00-02 AT
I am now working on adding Live Tuning support to these.

AH965 (1st Impreza dealer reflash) now forces OBD monitors to show ready. I will also be adding this feature to the newly discovered dealer updates.

I also found a dealer update for 99 Impreza 2.2L but haven't cracked it yet.

Waiting for my 2004 RS ECU to show up then can get started on figuring out the reflash for those.
 

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Banned
2000 2.5RS, '06 EJ207 swap
Joined
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92 Posts
I find I can only run romraider logger or the tuning software. Both at the same time fight over the bluetooth device.
I really need to adding logging to the tuner software. Romraider Logger has been a great tool for me but is starting to show its age. It's Java 64-bit support issues bug me and it keeps trying to open all the serial ports of which half of them are Bluetooth on my laptop so it takes over a minute to finally find the right one and connect. This wouldn't be an issue for normal users though who only have one or two devices installed.
 

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Banned
2000 2.5RS, '06 EJ207 swap
Joined
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92 Posts
I compiled some MAP sensor data. The Subaru values are taken directly from the ROMs for the respective cars. GM data is calculated from the Delphi engineering datasheets (09350899 for 2 bar, 12223861 for 3 bar). It looks like all GM 2 bar sensors use the same calibration but I can't confirm. Let me know your part number and I'll try to find the data for you.

Code:
			Rating	Offset	Slope		Max Boost
			bar	kpa	kpa		bar	psi
USDM SOHC MAF MY99	1	-20.0	32.5		0.41	6.0
USDM SOHC SD MY00+	1	 11.1	21.9		0.19	2.8
EJ205/EJ207 MY99-MY00	2.75	-55.2	67.0		1.78	25.9
EJ205/EJ207 MY01-MY04	2.75	-55.2	68.6		1.86	27.0
EJ207 MY05+		3	-39.1	68.6 	        2.02	29.3
									
GM 2 bar		2	  8.0	40.0		1.07	15.5
GM 3 bar		3	  1.1	62.9		2.14	31.1
 

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144 Posts
Saw that you released an update for live tuning on all ECU's. Just wondering if the sensors are set to ready on all of them? (Primarily asking about the 2002 RS)
 

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Banned
2000 2.5RS, '06 EJ207 swap
Joined
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92 Posts
Saw that you released an update for live tuning on all ECU's. Just wondering if the sensors are set to ready on all of them? (Primarily asking about the 2002 RS)
I'm not really understanding what you're saying. Are you asking about the OBD monitor tests being set to ready?
 

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The subaru of many acronyms
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1,918 Posts
How's the built in logger feature going? I Need to scale this wrx maf in now and it's pretty tedious closing and opening ecu explorer for logging (romraider likes to bug out for some reason). Also the live edit seems to be working well.
 

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2000 2.5RS BRP
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1,181 Posts
Discussion Starter #33
How's the built in logger feature going? I Need to scale this wrx maf in now and it's pretty tedious closing and opening ecu explorer for logging (romraider likes to bug out for some reason). Also the live edit seems to be working well.
I had that issue, too. I think it is a Java bug. If you have Android Studio on the same computer, it also fusses about the version. 32bit and 16bit don't play nicely together.

Logging is working very well. The sampling rate looks a lot higher than Romraider.

I can't wait for the new tables to further refine things :cool:
 

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Banned
2000 2.5RS, '06 EJ207 swap
Joined
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92 Posts
How's the built in logger feature going? I Need to scale this wrx maf in now and it's pretty tedious closing and opening ecu explorer for logging (romraider likes to bug out for some reason). Also the live edit seems to be working well.
I will send you the beta with datalogging. It doesn't have all the parameters for MAF ECUs yet (still need to add proper knock stuff in) but does give you fuel trims, MAF voltage and airflow. Should be enough to scale the MAF. Are you running a wideband? Don't have support of those yet.
 

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144 Posts
I'm not really understanding what you're saying. Are you asking about the OBD monitor tests being set to ready?

Yup. Sorry about the poor wording. I'm going to need to do an etest in the near future, and I was planning on turning off the evap & air assist options.

Also, about to try out my 420cc/6psi injector tune. Super excited and loving the software.

Thanks for all the hard work you've put in so far.
 

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Banned
2000 2.5RS, '06 EJ207 swap
Joined
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92 Posts
Yup. Sorry about the poor wording. I'm going to need to do an etest in the near future, and I was planning on turning off the evap & air assist options.

Also, about to try out my 420cc/6psi injector tune. Super excited and loving the software.

Thanks for all the hard work you've put in so far.
Yup all currently supported SD tunes have the OBD monitors automatically set to ready.

Very cool, let me know how it goes! If you need any help feel free to send me your tune.
 

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2004 Subaru rs2.5
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11 Posts
Waiting anxiously for an update on the 03/04 ecu platform. Currently piggybacking a Haltech Sprint 500 to an 04 ecu and this will really help the effort. Changing fan speeds, etc.
 

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02 OBS / 08 STI
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3 Posts
For some of us that have been in the community for a while with other newer turbo subies and have tactrix cables laying around, is there any chance those cables will be supported with project lambda?
 

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Banned
2000 2.5RS, '06 EJ207 swap
Joined
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92 Posts
There will be support for OpenPort data logging and ECU reads in the future. No plans for reflashing with them at the moment.
 
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