MSS6X Tunes

Explore Poverty Built’s MSS60 & MSS65 tunes for BMW S65/S85—E90/E92/E93 M3, E60 M5, E63/E64 M6. Stage 1–3 ECU calibrations refine VANOS, fueling & timing for reliability and response. Options: GTS-style throttle, rev/idle & speed-limiter tweaks. OBD/bench flashing.