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Tuner options

Discussion in '2005-2010 V6 Mustang Tech' started by FTP MUSTANG, Jun 20, 2014.

  1. FTP MUSTANG

    FTP MUSTANG New Member

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    I have a 2010 4.0 v6. Have straight pipes,k&n,and a sct sf3 programer just running the strategy tune. I put ngk iridium plugs And now it idles rough and seems to not have the power. Should i try adjusting the fuel/air ration. R adjust the spark?
     
  2. Derfdog15

    Derfdog15 Active Member

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    check the gap, also did you put a stock cold plug or a colder plug? did you get the firing order and everything else correct? Did you break any wires or notice any issues with them when you did the job?
     
  3. Phil II

    Phil II Cone Destroyer Staff Member

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    The straight pipes are probably not helping your motor. Are the plugs you installed an equivalent to the stock heat range? You do not have a real need for iridium spark plugs anyways.