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Old 11-08-2003, 11:47 PM   #1
Cert
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Default Swaps and obd-1/obd-2 issues

After looking through this forum I have found a lot of information regarding smog inspection issues and EJ20 turbo motor swaps into pre-2002 imprezas. However, I still had some questions and was hoping someone could help me out.

Here is what I have read, please correct if wrong:

1) Many people recommend swapping jdm motors into 1995 and earlier cars because 1996 and on cars have obd-2 and the insection process is more stringent.

2) On an obd-2 year car with a obd-2 motor/ecu, you will automatically fail smog with a non obd-2 ecu because the insection process almost always involves pulling any fault codes off the ecu, revealing that you have a non-compliant ecu/motor.

3) No JDM ecus of any year are obd-2 compliant.

So, assuming that you have swapped a jdm motor and ecu into a pre-1996 car, that can pass the sniffer test, here are my questions.

A) Are japanese motors/ecus obd-1 compliant?

B) Do smog inspections on obd-1 year cars involve pulling ecu emmissions fault codes?

C) What does the California smog testing process for a pre 1996 AWD Subaru L involve? Sniffer test, emissions fault code reading, visual inspection? Anything else?

C) If I live in California, is there any chance whatsoever of having a smog inspectable V8 STI spec C motor swap with the STI factory ecu running AVCS?

Of course, I know that any jdm swap in any car is not legal in California, and it would always be subject to visual inspections and failure would result in massive governmental ass-raping. However, could you have a car that could at least pass all but the visual inspection?
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Old 11-10-2003, 12:24 AM   #2
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bump
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Old 11-10-2003, 12:11 PM   #3
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i think JDM MY 97+ is OBDII. not sure though.
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Old 11-11-2003, 01:47 PM   #4
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All JDM Subarus as of 2000 are OBD-II compliant. I'm not sure what JDM Subarus had before that.

As far as I know, if the car is OBD-I, it is suspect to a visual inspection as well as a sniffer test. No fault codes are read to my knowledge, but a CEL is always a bad thing during an emissions test.
*Note: this is applicable to Utah.

-Jon
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Old 11-12-2003, 09:52 PM   #5
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Just got my 2 conversions (00RS to 02 WRX , and 93L to 00RS Wagon) tested by the Cal. State Ref. They basically check every part of the emissions. From the engine to the gas tank. In my case I have a 93L wagon that I converted to 2000 RS specs (Engine/Tranny/Suspension). I went way out of my way and changed EVERYTHING literally. This was because I did the unthinkable and converted it to OBD-II. But talking to the techs at the Ref center, that was what was needed. They did a complete inspection, checking every connector and emissions hose/line, connection. They also only performed an SMOG sniff test (since it was AWD), but because it was originally a 93 car, they could only test it under OBD-I standards. Their machine would not allow them to hook up the OBD-II monitor, even though it works perfectly. It would not read the RPM. THis confused them for a good 15-20 minutes until they could figure out that when they put in the year of the car, that it automatically goes into whichever OBD standard of the original car's model year.

Long story short......they only could do the simplist of SMOG tests on the car. They do still plug in the scan tool to verify that the OBD-II system works, and also perform a visual check of the ECU to verify Part Number on the ECU cover...but this last part is easy to fix.....change covers on the ECU, most do fit each other.

Its not too bad, but they are complete in their inspections. But don't let that scare you off.

CHeers

EddyL
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Old 11-12-2003, 11:55 PM   #6
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EddyRS,

What all had to be done for the obdII conversion? I was told that to get the codes from the engine only a few wires were necessary to the plug.

My car is running like crap and I don't have a scan tool. Might could limp it to Advance and try to get the codes pulled (if the obdII plug is connected correctly) if I can get the cooling issue figured out.

Cam
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Old 11-13-2003, 12:41 PM   #7
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Thanks for the post Eddy. Would you mind telling me what gas tank you are using and what you did about the chacoal canister and whatnot? This is in regards to the 93.

-Jon
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Old 11-13-2003, 06:19 PM   #8
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That was an excellent and very encouraging post Eddy. If you don't mind, I have a few more questions that you or anyone else may be able to shed some more light on.

I was wondering, you posted that the smog ref checks the ecu part number. Do they check the part numbers on the engine or anywhere else?

For example, if you had an OBD-II equipped jdm ecu/engine swap, and you switched out the ecu cover to a 2002/2003 wrx cover, had all other OBD-II standard emmissions equipment properly installed and functioning, and had a stock wrx exhaust(I suppose the wrx turbo and intercooler could be put on also) temporarily installed, do you think you could pass it off as a legal US wrx motor swap?

Would they check the part numbers on the block/heads/turbo/etc while doing the inspection and catch you?

Do you have any idea if they only check the part number on the ecu cover, or is the ecu model verified electronically when hooked up to the scan tool.

I suppose that another question that would get at the answer that I am looking for, is as a practical matter, to what extent does the smog ref care if you are running non US-regulation block/heads/turbo/ecu/etc if you have all of the emmissions equipment required by your car's model year, and what else do they check and how do they check it?
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Old 11-14-2003, 10:38 PM   #9
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Stimpy, I'm actually using a 2001 Forester tank......lucky for us, the Forester is built off the Impreza platform, so most of the parts are the same. I picked up the canister and all hosing as well.

Lucky for me I work right by a Subaru Dismantler, so had the pick of the yard.......it also doesn't help being in good relations with those at the yard....I guess spending all that I have, buys free rein in the yard.

As for what the Ref checks.....there is absolutely no way for them to check what kind of engine is in the car. As far as they are concerned all EJ20 engines look the same. Unlike Honda JDM/USDM conversions, Subaru does not stamp the VIN on the engine block. So it would be easy to get a JDM Subaru passed as long as you use a USDM ECU to run the engine......I know someone who's done it.

As for when they hook up the monitor....they only check for CEL's and that the OBD-II system works. I don't think they have the capability to check the Serial on the ECU. They got the serial off my ECU by pulling the carpet and removing the protected cover.

I used the wiring from a 99 OBS, and modified it to work on the 2.5 engine. All I had to do was splice in the MAP sensor (3 wires), add the 2 wires for the front O2 sensor, and reroute I believe 6 other wires and volla, you have a 2.5L compatible harness.......it took me like 3 hours to desifer, mark, and change the harness......nothing like the 1 month it took me my RS to WRX conversion. When I get some time I will write up a How to that completely shows how to rewire the 2.2L to a 2.5L. As for the 2.5L to 2.0LT.....I've promissed some folks to keep my silence, but will help any on bits and suggestions.

Got to go....dinners ready.....

Cheers

EddyL.
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Old 11-18-2003, 10:26 AM   #10
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dude having a nice car in cali must really suck when it comnes time for testing Wow I'm glad I don't have to pass any emissions crap.
take it easy, Micah
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Old 11-18-2003, 11:14 PM   #11
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A pain yes.....Impossible no. For those of us who like to make our cars faster in California....the key is to keep the stock parts, don't sell or toss them. That way when the time comes for testing we swap back to stock. No issue.

Got to do what you got to do I guess.......I kind of wish that the smog Nazzies would go away......but if you ever seen a Hot summer day in LA....got to agree that we need something about polution.

Both my conversions are Smog legal, and both are more powerful then stock too.

Future plans is to get a built EJ20 engine for my coupe and keep the stock one for emmision testing. Then, every 2 years when it was time to get the car tested it would only be a 4 hour engine swap.....I could do it on Saturday, get it tested during a week day, and swap back on the following Saturday. Also would give me a great excuse to tear down and check the condition of the Hi-performance engine and associated hardware every 2 years to ensure its running perfectly.

Cheers

EddyL.
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Old 11-19-2003, 12:34 AM   #12
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hey good but expensive thinking.....I like it
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Old 11-19-2003, 12:16 PM   #13
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Expensive? We shall see. I was quoted $65 locally to get the gastank and all attached sensors. We will see what it comes out to once I get ALL necessary peices.

-Jon
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Old 11-19-2003, 12:55 PM   #14
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Quote:
Originally posted by EddyRS
I kind of wish that the smog Nazzies would go away......but if you ever seen a Hot summer day in LA....got to agree that we need something about polution.
I agree (I work for an environmental firm), but CARB doesn't seem to be doing its job of actually helping the environment. As we all know, a perfectly clean running Subaru conversion (or Honda or whatever) can be deemed illegal while a gas-guzzling, smoke-spewing 30-year old car can somehow run around essentially unchecked.

There was an article in SCC a while back that basically said that CARB is just a big money makin scheme for the state. I tend to agree. It costs aftermarket parts manufacturers tens and tens of thousands of dollars to get a coveted CARB EO# (oooh) for a freaking intake or exhaust and all the money just goes to the state. Can you imagine all the money they're making from all the manufacturers out there (form all states) with all these products that they want to make 50-state legal?

CARB bastards. Sorry for the rant. I'm okay now.

Chris
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Old 11-19-2003, 10:33 PM   #15
EddyRS
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Too True......We should start an Inititive and reform CARB. YEA RIGHT.........that would and could never happen. That is make CARB something other then a big pain in the rear. But rules are rules and you got to work with them, or risk getting caught.

Jon, I hope you realized, and thus were being sarcastic, that he was talking about my wanting a spare Hi-Perf engine and not what you are doing.....

Of course you did......

Cheers

Eddy L.
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Old 11-20-2003, 12:17 AM   #16
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/me puts on the dunce cap
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