Stage 1 / Stage 2 OTS mappacks by engine family — M177 / M178 V8 ($950), M276 V6 ($799 / $839), M133 ($839), M157 / M278 ($839) and M256 ($900), all including the D1 Wi-Fi dongle and covering one VIN. Online checkout for the US & Canada; every other supported region orders by email. Full per-car stock / Stage 1 / Stage 2 figures: all supported cars.