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Old Jul 3, 2004 | 10:43 AM
  #4  
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Civic2Scooby
 
Joined: Jul 2003
Posts: 28,282
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From: michigan
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well did you back wire the 97 motor to obd1 or not...if you did then you need an obd1 ecu. If you upgraded the whole obd1 civic to obd2, then you need an obd2 ecu
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