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Old 05-16-2004, 04:02 PM   #1
ebeck
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Default Emissions and the JDM ECU

Any one solved and potential JMD V7 ECU problems when doing a JDM conversion. I will be using ECU-Tek so I assume I can present the OBDII sensor any thing I want.

I will be using the JDM intake and risers on a 2.5 block with V8 heads and JDM ECU for the AVCS.
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Old 05-18-2004, 11:40 PM   #2
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What problem?
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Old 05-19-2004, 06:23 AM   #3
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? What kind of emission tests do you have to go through?

If it's anything that they open your hood and check VIN #'s for then you'll have problems. There's nothing you can to to make a swap like that legal. It's just one of those cases where if you live in a place with very minimal or no emission tests you're not going to get caught.
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Old 05-19-2004, 01:12 PM   #4
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this is one of my promary questions for mr cobb at next weekends meet .. weather or not he can make a v7 or v8 ecu respond to the obd-2 queries for emmisiosn testing
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Old 05-19-2004, 02:03 PM   #5
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Right on. Well the problems I am refering to is emmissions in general. If you can not plug the new ECU in and tune the car and pass emmissions then that is a problem. If so, what would those problems be. That is the actual question. Are there any problems passing emmissions tests. I would clearly state would the new flux capacitor conflict with the dilithium crystal, causing excessive gamma radation causing me to fliunk emmissions if I knew what I was talking about. Hence the question.

So for the sake of clarity, iIs there any problems with the V7 ECU with AVCs and TGV delete housings passing the obd-2 tests? Most places do not have an AWD dyno so tail pipe tests are out I believe. Just the obd-2 stuff. If there is tail pipe tests would it pass. Sure it varies by State. So, would it pass California standards. OBD-2 and tail pipe if they exist there.

Sure, you can register the car in a county with less strict emmissions and all kinds of crap to get around emmissions tests. I would rather go through them than around them. That's just me.
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Old 05-19-2004, 02:20 PM   #6
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There is a good chance you could get the car to pass a sniffer test. The problem is when they open the hood and see the engine VIN doesn't match. In cities that use standards similar to California, you generally need to have any new engine installed pass a referee inspection to be legal, even if it's just the same that came stock on the car. There is nothing you could do to technically make a 2.5 block running V8 heads and a V7 ECU legal. The engine that you swap has to have been offered in the US by the Subaru to be legal.
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Old 05-19-2004, 02:52 PM   #7
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what he said but some states are less strict
idaho for example:

they scan your bar code off the b pillar with a bar code reader verify it is the same on the windshield and plug in the obd-2 .. make sure the mil comes on when you start the car and pull the codes .. no codes = pass

older cars get the sniffer
my early ej20 with no idle air controller and a usdm down pipe passed with flying colors
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Old 05-19-2004, 03:39 PM   #8
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Quote:
Originally posted by Eby
There is a good chance you could get the car to pass a sniffer test. The problem is when they open the hood and see the engine VIN doesn't match. In cities that use standards similar to California, you generally need to have any new engine installed pass a referee inspection to be legal, even if it's just the same that came stock on the car. There is nothing you could do to technically make a 2.5 block running V8 heads and a V7 ECU legal. The engine that you swap has to have been offered in the US by the Subaru to be legal.

The ref is tricky... You may beable to pass it off as a usdm 2.5 motor everything must look stock, no hacked wires. If you must do it under the dash... And your cars title will change if you pass the ref; it wont be a wrx anymore it will be a sti and have the insurance from that. Just because they dont have awd dyno doesnt mean they wont do a sniffer test... mostly they do the idle test.

The ecu itself should pass the test no problems... but once they look at the motor you could have problems. http://forums.nasioc.com/forums/show...ighlight=IM240
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Old 05-19-2004, 03:40 PM   #9
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Yea, that's what I'm saying. It will all depend on how thurough the emissions tests are where you're at.

No swap like that will technically be legal anywhere, the EPA sets those regulations. It's just that in places where there isn't strict emissions testing there is no enforcement so you can get away with it.
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Old 05-19-2004, 08:46 PM   #10
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Hmm, I wonder if AZ pulls VIN numbers for engine and Pillar? Even if they don't, if they start I would be screwed. Perhaps forged pistons in the stock block with my V8 are in order......

300 whp on Dyno-Dynamics is not asking too much....
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Old 05-19-2004, 10:20 PM   #11
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Quote:
Originally posted by ebeck
Hmm, I wonder if AZ pulls VIN numbers for engine and Pillar? Even if they don't, if they start I would be screwed. Perhaps forged pistons in the stock block with my V8 are in order......

300 whp on Dyno-Dynamics is not asking too much....
Why whould you be screwed on start up? You would have to run stock like pipes, at least one if not more cats, if you wanted to pass... Are you talking about forged piston slap? Should be much of a problem after the car is warm...?
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Old 05-20-2004, 02:47 PM   #12
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No, no, If they start pulling VIN numbers from the block and A Pillar I would be screwed. Sorry about the ambiguity.

Ha ha, I am vague I see. I a contemplating putting V8 heads on my stock 2.0 block as a performance upgrade and scrapping the 2.5 block do to fear of AZ starting to compare VIN numbers.

How would the V8 heads and cams with AVCS work on the 2.0 block. Would there be a performance gain in lower rpm or just 7000+. I am hoping the higher flowing, longer duration cams means I can flow more air and gain more power below 7000 rp,.

I was saying if the shoddy 2.0 block and pistons fail sometime later, I can just get new pistons and sleeves put in. I just wonder if the V8 heads andECU would be a benifit over stock USDM 2.0 setup.

The idea is a stronger stock block with V8 heads and ecu would pass emmissoins for sure even if they pulled and compared numbers.
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Old 05-20-2004, 03:11 PM   #13
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O ok I see. Ya, i wouldnt bother putting the good heads on a crap block... You will see good gains but its just no worth all the time its going to take IMO.



Call you DMV or whatever they have in Az and find out what you need to do to get this swap passed. I realy think at the very least you can pass it off as a 2.5 US STi... and my beable to pass smog with it just fine. People blow motors and replace them all the time... Try contacting people in Az who have done it and see what they say. The guys a kingpin, AZScoobie, ... and see what they are doing.
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Old 03-14-2019, 08:53 PM   #14
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i just bit the bullet and bought a usdm ecu for my jdm swap, took it to the shop and didnt pass, it didnt even read any thoughts?
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Old 03-15-2019, 06:26 PM   #15
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Quote:
Originally Posted by ZFracing View Post
i just bit the bullet and bought a usdm ecu for my jdm swap, took it to the shop and didnt pass, it didnt even read any thoughts?
what didnt it read? have you tried to plug in a obd2 port reader?
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