sct x4

  1. I

    SCT Tuner only goes richer not leaner

    Hello! I have an 06 mustang, and recently after adding some mods got an SCT tuner. I put in a Bama tune, and it runs perfectly. Either way, the car runs rich, and when going on the SCT tuner, I was looking for an option to make the air to fuel ratio leaner. The only option I have is 0-14%...
  2. W

    Locked out of my PCM to tune?

    I bought this car a year ago and I was doing modifications like hot rod cams didn't take throttle body cold air. I got my SCT tuner with a custom-made tune for everything I've done went to do the tune in the car it comes up with an error. Saying that I am locked out can not tune. Been in contact...
  3. 9

    Is my tuner locked to the shop that sold it to me?

    I purchased my SCT X4 tuner for my 2005 mustang when I let a local speed shop install long tube headers, CAI, and high flow cats. That was about 4-5 years ago. I have not messed with the SCT since then. I just installed 4:10 gears and went to adjust for them in my tuner like I've seen online...

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