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    Thread: 5.3 EFI swap

    1. 08-19-2015 #1
      gio75camaro
      gio75camaro is offline Registered User
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      5.3 EFI swap

      So I have a 5.3L LS1 and was wondering how anyone has tied it into the wiring harness and what computer you used. Any info will be much appreciated!!!

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    3. 08-24-2015 #2
      rickpaw
      rickpaw is offline Registered User
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      I ran a stand alone harness/stock reprogrammed ECU from PSI. You can also get the stand alone LSx harnesses/ECU from Speartech/Holley etc...All you need is constant hot/ignition hot and ground. The vehicle harness can provide all that.
      Tu Ho
      Firebird V2-LS swap
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