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I currently have proefi 128 ecu in my supra and was wondering what changes i would have to make to switch over to the infinity? I know the Infinity is supposed to be "plug and play" but since i am coming from the proefi am i going to encounter problems since i repurposed plugs/connectors not in use? I guess what i'm really asking is would i be better off getting a new harness that hasn't been touched?

The only changes to my harness have been following the changes listed in the proefi install writeup and adding an oil pressure sensor. Sorry if this question seems stupid i'm not an electrical guy.
 
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