Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

H22a swap in ek wiring

 
Old 04-15-2019, 07:29 AM
  #1  
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Default H22a swap in ek wiring

Ok I have a an ek hatch and Iím doing an h22a swap. What connectors do I have to change since the car is obd2 and h22 is obd1?
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Old 04-15-2019, 08:40 PM
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Default Re: H22a swap in ek wiring

The simple answer: Injector clips, distributor plugs, IAT, alternator control plug and add the VTEC wiring. You will have to lengthen and shorten some wiring even though the plug style is the same. You can however, use a 5G set of Prelude fuel injectors and they will be "plug-n-play" with your EK hatch engine harness... and you COULD keep your IAT sensor in the inlet pipe instead of changing the plug and connecting it to the IAT sensor in the Intake Manifold, although this will not work as well when using an OBD-1 style ECU.

In closing... there are MANY ways to properly make this combination work. Wiring changes and component changes WILL work, so there is no SINGLE answer to your question.
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Old 04-18-2019, 05:35 AM
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Default Re: H22a swap in ek wiring

Originally Posted by JRCivic1 View Post
The simple answer: Injector clips, distributor plugs, IAT, alternator control plug and add the VTEC wiring. You will have to lengthen and shorten some wiring even though the plug style is the same. You can however, use a 5G set of Prelude fuel injectors and they will be "plug-n-play" with your EK hatch engine harness... and you COULD keep your IAT sensor in the inlet pipe instead of changing the plug and connecting it to the IAT sensor in the Intake Manifold, although this will not work as well when using an OBD-1 style ECU.

In closing... there are MANY ways to properly make this combination work. Wiring changes and component changes WILL work, so there is no SINGLE answer to your question.
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Old 04-18-2019, 05:38 AM
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Default Re: H22a swap in ek wiring

Do you know on how to wire a resistor box by any chance also the injectors
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