Super clean install! Really excellent.
Without a DP, I'd say go with Stage 1 93. With a DP, Stage 2 93. You might be able to get away with the E30 Stage 2, since ethanol will offer slightly cooler EGTs, but the stock cat may suffer. Adding WMI would increase the chances of that working well.
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F25 X3 35i M Sport | Frankenfold 6662 | VRSF Race IC | FTP CP | BM3 tuned | XDI-35 HPFP | Stage 2 LPFP | Ethanol mixed | WMI | Oil cooler | xHP | X5/550i brakes
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