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B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

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Old 01-27-2019, 06:45 PM
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Default B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

Hi I’m new here but I was looking for some answers. I bought a 98 ex coupe with a b16a2 swap already in it. I was suprised to see that the Ecu the motor is running on is the stock y8 P2P ECU. Obviously this isn’t ideal but will it be okay to run till I can get a 99-00 em1 P2T or a gsr obd1 Ecu? Also the car would be obd2b right? There is a jumper harness going from the Ecu to the harness (not sure if harness is si or ej8) Just trying to see how this is set up because it all seems very odd.
Old 01-27-2019, 10:15 PM
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Default re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

The best choice would be to find a '96-97 Del Sol DOHC VTEC ECU (P30) and plug directly into the engine harness from your '98 Civic EX. You can try a '99-00 P2T with an OBD-2B -> OBD-2A adapter harness, although you may get some emissions related codes with this option because the parts in the chassis are different.
Old 01-28-2019, 07:35 AM
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Default re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

Originally Posted by JRCivic1
The best choice would be to find a '96-97 Del Sol DOHC VTEC ECU (P30) and plug directly into the engine harness from your '98 Civic EX. You can try a '99-00 P2T with an OBD-2B -> OBD-2A adapter harness, although you may get some emissions related codes with this option because the parts in the chassis are different.
thanks for the reply I’ve been looking for a p30, another question would be how I can determine what harness I have. Not sure if it’s the ej8 or a em1, a lot of parts on the car are true em1 so theirs a chance it could be. What plugs would be different? Or any other ways to tell what it is.
Old 01-28-2019, 09:39 PM
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Default re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

A '98 manual harness will have THREE ECU plugs and the green crossover plug. A '99-00 EM1 engine harness has only TWO ECU plugs and the green crossover plug... the third ECU plug is part of the under dash harness.
Old 02-03-2019, 09:19 PM
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Default re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?







So I have the 98 harness right?
Old 02-04-2019, 10:10 PM
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Default re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

That IS what it looks like.
Old 02-08-2019, 03:03 PM
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Default Re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

Awesome I got a p2t on the way and then I’ll just need a obd2a to obd2b conversion harness right?
Old 02-08-2019, 09:05 PM
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Default Re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

That isn't the path that I suggested... and you may get some unwanted emissions-related issues because of the lack of backwards compatibility.
Old 02-08-2019, 10:48 PM
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Default Re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

I’m not too worried about emissions but I want it to run correctly, however what would you suggest.
Old 02-09-2019, 06:15 PM
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Default Re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

You will be fine running an ob2a to obd2b jumper harness to run the p2t ecu. There won't be any issues. My brother passed CA bar and ref that way when he swapped a b16a2 into his 98 sedan.
Old 02-09-2019, 08:30 PM
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Default Re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

Okay so I decided I’m going the route of using the p2t Ecu, I’m a little confused because all I see is obd2b to obd2a jumper harness, buttt my 98 ej8 is a obd2a right? So wouldn’t I want a obd2a to obd2b harness, not vice versa????
Old 02-09-2019, 09:40 PM
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Default Re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

Look here:

https://www.boomslang.com/honda-obd2-to-obd2.php

You want the one in the lower picture. Part number is BF03001.
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Old 02-23-2021, 10:07 PM
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Default Re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

Jrcivic1 your right that’s what I did on my car.runs smoothly.there is no any problem.
I have 1998 coupe si p2p C34.I change the Ecu P30 C01.car is awesome.
Old 02-24-2021, 08:48 PM
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Default Re: B16a2 running on a P2P ECU From a D16Y8. Good idea as a temp solution or no?

Originally Posted by entoy
Jrcivic1 your right that’s what I did on my car.runs smoothly.there is no any problem.
I have 1998 coupe si p2p C34.I change the Ecu P30 C01.car is awesome.
Always honored and happy to help. Glad it worked out for you.
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