h&s unrecognized part number

went to program 2015 f 550 with 6.7 an got this unrecognized part number fc20bre,mm any help


  • edited July 2019
    Ah, that's the problem. The last year the H&S supported on the Ford 6.7 was 2014 and the F450 was the biggest model I've ever heard was tune-able.
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