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Does this make sense?

 
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Old 08-14-2013, 05:48 PM
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Does this make sense?

I have a obd1 ecu which from the bar code says it is from a P06 : 92-95 OBD-1 Civic DX source of info is ECU Identification does that make any sense running this in an 97 prelude with h22a? please advise. and it also says that is an american ecu with automatic transmission
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Old 08-14-2013, 11:23 PM
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Re: Does this make sense?

Just means you're running an obd1 ecu due to the motor being swapped out.


Without the original ECU, immobilizer system and red key, you would be looking at a ton of money to make the car OBD2 once again.


Ontop of converting the motor to obd2.




The previous owner probably found the obd1 ecu the cheaper option for lack of knowledge. Or he/she wanted to get a better tune with obd1 - beings you didn't mention any tuning software/parts, i'm leaning towards my first assumption.
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Old 08-14-2013, 11:50 PM
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Re: Does this make sense?

I don't mind it being obd1. just thought p72 and p28 and p13 were some of the only choices. Don't plan on going to obd2 at all
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Old 08-15-2013, 08:26 AM
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Re: Does this make sense?

Stick with the ODB1 if you can. But check into the smog regulations in your area. In Canada where I live, if you have a car that came with ODB2 from the factory, it needs to be working for the smog guys to pull data off the car. If the car is ODB1 from the factory, like my 95 SRV, they use a sniffer in the tail pipe (easier to pass).

If I were to pull in with a 97 Lude (ODB2 from the factory), and they wouldn't be able to connect to the ODB2 port to pull data it would be an auto fail.
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Old 08-15-2013, 09:57 AM
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Re: Does this make sense?

wait do you even vtec? lol isn't the dx sohc nonvtec?
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Old 08-15-2013, 11:30 AM
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Re: Does this make sense?

It makes sense. It is most likely a P06 that has been chipped and converted to vtec. This is easy to do I do them all the time and that is what my car is running on right now with a h22 basemap burned on crome. The P06 and P28 both come off of the same physical electrical boards, the difference being a few extra pieces soldered to the board, and the fuel maps of course
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Old 08-15-2013, 03:59 PM
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Re: Does this make sense?

It always amaze me how people STILL do motor swaps all Willy Nilly and completely forget to use the right ECU. It's really not that hard. I get confused over distributor cap shenannigans between the h22 and the obd1 and obd2 but it's always P28,chrome,or,Neptune, or the one Blake uses.

As long as it passes inspection, great. But bookmark the emissions website of your local DMV and check weekly for changes. Personally, just swap it to the right one, so your car can pass elsewhere.
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Old 08-15-2013, 09:55 PM
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Re: Does this make sense?

Well i don't have emissions in kansas. So that does not matter really. I have never really looked into ECU's but the swap was done before I picked up the car. It does hit vtec. I just replaced my distributor today to get myself running a little bit better, but I am still pulling a code 7 which if I am correct is the tps sensor so not sure if I need to go back and double check the wiring or look at ecu first.
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