running lean Problem/ question

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    Hopefully you can help me out. I have a 07 Mustang GT automatic and ran the 91 octane street kit on it for several years with no problem (except that I didn’t like the harder shifting). I have a BBK 62mm throttle body and a BBK cold air intake. Recently, I restored the stock tune because I’m using the car to commute in and really don’t care about performance. Soon after, the check engine light came on and I read codes for system too lean for bank 1 and 2. Also it is pinging during acceleration.In short, I would like to keep the intake and throttle body on the car but would like to correct the lean situation. I would like to keep everything else stock except for the fuel correction. Can you help? Is there a downloadable tune or a fuel adjustment I can make to the stock backup?

    Please help.

    I didn’t find the right solution from the Internet.

    Compliance Management Video


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