PSI3 ODB1 Subaru data-display

[morgie]

I found a nice little product to display datas the ecu is reading.. like knock signal, advance/retard, boost.. etc... It's currently availlable for OBDII subaru's but they are working on a ODB1 version.

I drop them a mail to know if it would work on our 2.2l Turbo (since it's a UK company, was wondering..) and here is the reply :

http://www.psi3.co.uk/products.html

Hi Nicolas, we will be offering a unit to work on your car, we hope to have
this ready in the next few weeks.

Simon

that was my question :

Car Model: Subaru Legacy 2.2l Turbo 1992

Enquiry: Hi, i saw that you were working on an non-obdII device. Will it be
working for 2.2l turbo's engines ?

I know a couple of guys (including myself) who would be VERY interested in
such a product.

Thanks,
---My Name Here---

[entirelyturbo]

If it's a reasonable price, and can work for NA's too, I might be interested!

[DLC]

Definitely.

Dave

[IggDawg]

I want to put in my "that is whAck I must ownZ one!" I would love a datalogger. I'm a sensor whore. the more readings I have the better.

[vrg3]

Wow, nice...

This is as good a time as any to update you guys on my homebrew datalogger...

I have successfully done a datalog of my throttle position during a drive. I also think I have the right memory location for engine speed, but I'm not sure.

That's about it though... I was basically interfacing through the select monitor port. It seems that my ECU (22611AA694 from a '93, the final EJ22T ECU revision, although for all I know a previous owner of my car may have hacked it up a little) uses different memory locations than other Subaru ECUs for its interesting data. I got my hands on another EJ22T ECU last week, 22611AA693, from a '92, and it doesn't seem to respond at all on the select monitor ports, at least on my bench setup. That's kind of a bummer because I was hoping to use it to develop the monitor indoors out of the car. I guess maybe it wasn't until 1993 that Subaru started using the Select protocol I'm using.

The bench ECU setup I have would allow me to snoop on an actual Select monitor connecting to the ECU, so I'm more interested than ever in finding a real Select monitor to use.

I guess in the state I have it in now, it's already in decent shape to use a N/A; I'd want to clean the software and visual interface up of course. Also, the update rate is a bit low, and I haven't yet figured out how to improve that. It gets something like 10 samples per second and only one data channel at a time.

This system is going to run about $7 plus a laptop computer.

I'm also still working on the datalogger that plugs in between the ECU and the harness; that one will be more universal and reliable, and cost maybe $40 plus an ECU and harness to cannibalize (I got them from a junkyard for $11.64).

I wish I had more free time. Sigh.

[DLC]

Good to hear that you're getting somewhere with that.

SCC had an article about a year or so ago about OBD-II readers and noted then that even the latest WRX has a very slow refresh time, 8/sec if i recall correctly.

Keep us informed!

Dave

[spacemonkey]

I too was looking into this monitor. I just found it tonite while searching for boost and egt gauges. This could be really cool because for the same price not only do you get a p/w boost gauge, egt gauge, etc., you get the code reader which i find exceptianlly worth while.
Will somebody research a group buy? i'd be down especially in the next three weeks or so!!
monkey-

[vrg3]

I don't think these things would be able to tell you EGTs; our cars don't have exhaust gas temperature probes.

[spacemonkey]

aftermarket probes are easy to come by. then it's just the cost of having the bung installed on the headers right?
that doesn't seem too dificult

[vrg3]

Installing an aftermarket EGT gauge is relatively easy. I was just pointing out that the PSI3 datalogger wouldn't be able to record EGTs.

[Legacy777]

Hopefully they can get a version out for the OBD1 cars and have it work for both the n/a's and turbo cars. I know I'd be interested in it.

On a side note. I finally found a select monitor on ebay the other week. I picked it up for $265 It has a couple cartridges. Some for the late 80's subies and stuff for early gen legacies. I'm not sure if it differentiates for turbo or not. I'll have to play with it on my buddy's 94 turbo.

I should have it tomorrow. I'm very curious to play with it, just make sure it works and I can grad the info I've been wanting to get from the ECU for a very long time.

[vrg3]

WOW!!!

Josh, that's awesome! A good price, too!

My factory service manuals for the 1992 and 1993 Legacies list only one cartridge part number for all models, but we've seen missing information before.

Would you consider lending/renting it out...?

[Legacy777]

hehe.....you don't know how long I've been trying to get one of these bad boys.

Here's the original auction http://cgi.ebay.com/ebaymotors/ws/eBayI ... :EOAB:US:6

Lemme see how it works and stuff......not sure I really want to ship the thing around. If someone was in my area, I've got no problem in anyone using it.

I guess I need to move in an area with more subies.

[Legacy777]

Well I've got good news and bad......

I got the select monitor and cartridges. Hooked it up and everything works. You really need to have the FSM, which gives you the values for the three letter codes, and tells you where the values should be.

That's the good news.

The bad news is that it does require a different cartridge for the later gen legacies. I am assuming the 90 & 91 may share the same cartridge.....however it may not, because it has a turbo.

If I could get a hold of the cartridge for the the later models 92-94.....it'd probably be the same for the 91.

The 92 & 93 FSM lists the cartridge as 498348800
The 90 FSM lists it's cartridge as 498347500

Interestingly, subaruparts.com lists the 90 cartridge as discontinued. The 92 one is still available....it's got the yellow light though....so not sure about it's availability. BUT.....they only show it as 132 bucks. At that price.....if I can find it some where in stock for that price, I probably should buy it, because it will only be more difficult to find as time passes.

If anyone has FSM's for the 91 or 94 legacy, can you check it, and see what the number is.

If I can still get a hold of the cartridge....and at that price.....I better do it.

From what I did see in the monitor......my IAC valve's duty % needs to be higher. It's around 20% right now....needs to be in the 40% range. Adjusting that will hopefully help my idle issues.

Also....something weird was the barametric pressure. The cartridge gives you two options.....one for the MPFI stuff, and one for the 4EAT. The barametric pressure reading on the 4EAT side is at 780 mmHG, while the MPFI side is at 752 mmHG.

I'm wondering if that difference in pressures could be causing issues in shifting.

[Legacy777]

This select monitor is nice.......but it probably doesn't hold a candle compared to the newer ones as far as features and such.

I would still like a data logger

[vrg3]

Hey Josh, I totally understand you not wanting to ship the monitor around. I was half kidding about renting it out.

You do need the mapping between Fxx values and sensors from the FSM, but they're the same for all Subarus that use the old-style Select monitor as far as I know. I can post them if anyone wants.

I ran into some interesting information recently about the BC/BF Select monitor cartridge part numbers:

1990 498347502
1991 498348400
1990-91 498347601
1992 498348800
1993-94 498349200
1990-94 498347700

So it looks like in 1990 they went through a couple of revisions, and in '91 they released both a cartridge just for the '91 and one for both '90 and '91 (I guess so dealers who already had the 1990 cartridge could just get the 1991-only one). The 1990-and-1991 one had a revision as well. The other few seem to follow the same pattern...

So which one do you have, Josh? Apparently getting 498347700 would be the ultimate, but at least subaruparts.com's database says it might be discontinued. In fact, the only ones not listed as such are the 90-91, 92, and 93-94 cartridges. Maybe Subaru decided allowing a dealer to get just one cartridge for all the cars wasn't a deep enough gouge. Sigh.

As far as still wanting a datalogger, would you consider maybe allowing me to send you a laptop computer, a 1990 ECU, and some custom hardware including a plug that the Select monitor could plug into? I'd try to make the setup power the ECU and have the laptop snoop on what the Select Monitor does when you scan the ECU. I ought to be able to use the resulting data to write a piece of datalogging software so that you could use a laptop (I'd of course want my stuff back ) to log the same data the Select monitor can scan, and make pretty graphs and whatnot.

[Legacy777]

That's very interesting about the info you found about cartridges.

I did a little snooping yesterday, and from what I can tell I'm SOL as far as getting cartridges from the dealer.

I personally have the 1990 cartridge 498347500, which shows different then what you put.....must be the revision thing.

I called about the 1992 cartridge 498348800. I called several dealers, most said that it was an obsolete part and couldn't be gotten. I called subaruparts.com and got someone to dig a little for me. What he said is that, technically the part is not discontinued, however there is none in the country, and would need to be ordered from Japan. But he said that the order would probably not go through since it's just one. If there were a whole bunch ordered, then the probability of getting one shipped from japan would be good.

The only other options would be to try and find one used......or find someone in Japan that could get a cartridge and ship it over. yeah it'd be nice to try and get the cartridge for the 1990-1994 MY's.

I'd definitely be interested in giving you a hand in developing some sort of datalogger or some other sort of goodies. I've got a laptop...actually two...one is mine, one is work, so sending a laptop wouldn't be a big deal unless you have special software and/or connection ports.

We should do some chit-chatting about this. Shoot me an IM or email, and we can try and figure something out.