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I use jb4 with custom tunes on both of mine n54tt and n54st and would absolutely keep using jb4 for the duration of the owhership. The free support I get is amazing. I was the fisrt to install m3 cluster over a decade a go and they worked with me on the scalling. They work with me on oil pressure gauge to be integrated. Also both cars have PI and they worked on the PI gauge scacalling and algoritam for the single turbo waste gate. Additionally the safety feature when Jb4 reverts everything back to stock is helpfull. Changing settings on the fly it's good too. I track these cars. Other people drive these cars. JB4 will remain.
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