What that dial for on my ecu?

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s14inphilly
Posts: 22
Joined: Sat Mar 25, 2006 1:19 pm
Car: JDM S14

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What is the dial for on the back of my ecu?The car is a S14 black top.The dial has a plus on one side and minus on the other?


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smokey240sx
Posts: 587
Joined: Fri Apr 30, 2004 1:19 pm

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screw is use to adjust the idle speed and to change the diagnostic mode.


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