hiboost Posted May 22, 2019 Share Posted May 22, 2019 Hi all, Customer has had the diff ratio changed in his 07 BF XR6 turbo with ZF 6speed to 3:23 from 2:73, to change the ratio in the PCM calibration do I just alter auF0394 or is there another area that needs changing? I have changed the auF0394 value to 3:23 and when I checked for codes after the road test I have code P1934 vehicle speed signal, car drives okay. Thanks Neil Quote Link to comment Share on other sites More sharing options...
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