96-98 EX harness repin to fit 99 Si ecu??
05-01-2003, 12:27 PM
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96-98 EX harness repin to fit 99 Si ecu??
tell me if i am right...I have a 98 ex harness going to repin it so it can plug into my 99 si ecu for my swap, am i doing it right? did i miss anything or i have to add extra wires, or is there any wire from the ex harness dont need for the si ecu? plz guys help me, thankz
05-01-2003, 12:32 PM
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Re: 96-98 EX harness repin to fit 99 Si ecu?? (RedLineHatchSi)
The 96-98 harness isn't a direct bolt on.
In order for you to get it to work, you're basically gonna hve to repin each plug. It's a nightmare and probably not worth your time.
If you really want to run this set up, get a ecu harness converter.
In order for you to get it to work, you're basically gonna hve to repin each plug. It's a nightmare and probably not worth your time.
If you really want to run this set up, get a ecu harness converter.
05-01-2003, 01:18 PM
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Re: 96-98 EX harness repin to fit 99 Si ecu?? (Green R)
how much does that harness converter cost? so basically I dont need to add any extra wires to the si plugs? all the wires from the ex harness will match up the si ecu?
05-01-2003, 01:30 PM
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Re: 96-98 EX harness repin to fit 99 Si ecu?? (Green R)
you'll need an obd2a->obd2b converter harness...I dont know where to get em (but I heard hondata will make it for you)
05-01-2003, 01:39 PM
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Re: 96-98 EX harness repin to fit 99 Si ecu?? (pdiggitydogg)
Kenji or Blown90Hatch can make them for you.
I bought parts from both of them and made one myself.
I bought parts from both of them and made one myself.
05-01-2003, 09:17 PM
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well, I have a 97 hatchback w/ 99 si motor using 97 gsr ecu now, but the car is running really slow, and the vtec is so weak, so I was planning to use the Si ecu to see how it is..
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05-02-2003, 11:41 AM
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Re: (RedLineHatchSi)
Okay, that helps. The best thing to do would be run a harness.
But the only thing is, you'll have a code 91. The OBD2b ecus look for a sensor that you don't have. So, be prepared for that. Or, you can try and find a friend with a chipped ecu and a harness, that would probably be better.
But the only thing is, you'll have a code 91. The OBD2b ecus look for a sensor that you don't have. So, be prepared for that. Or, you can try and find a friend with a chipped ecu and a harness, that would probably be better.
05-02-2003, 05:11 PM
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Re: 96-98 EX harness repin to fit 99 Si ecu?? (RedLineHatchSi)
best thing is going to be getting a convertor harness. i got mine from a guy in fl email is kenji211@tampabay.rr.com he did mine for 200 shipped and it is the best looking convertor i have seen, he kept the wire colors even stock. a 99 ecu is going to throw a 02sensor code unless you run a factory cat and 2nd 02 sensor.
i have a p30 ecu for sale e-mail me if your interested. you would have no o2 sensor problem but would still need a convertor harness.
i have a p30 ecu for sale e-mail me if your interested. you would have no o2 sensor problem but would still need a convertor harness.
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