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E89 Z4 DCT Differential Upgrade Recommendations (gearing and LSD)
I broke the input shaft on my differential after wheel hop at the drag strip. I need to replace the diff and wanted to get recommendations on gear ratio change and LSD experience. I am going to install RR600s so I am expecting 600rwhp and am not sure if it is needed or worth it to upgrade. I can get a used diff for $675 but it looks like upgraded diffs are $3000 or more.
Appreciate feedback and others' experience.
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2009 Z4 DCT - Hexon RR600, MMP Inlets/Outlets, Wagner EVO 2 Comp FMIC, Fuel-It TBI, Fuel-It Stage 2 LPFP, ER CP, Forge DVs, N20 TMAP, BQ Tune 93/E65, BMS DCI, AR Catless DPs, BMS OCC, RB PVC
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