This Mercedes-Benz W204 C250 1.8L Turbo  received a performance upgrade with a high-flow downpipe  and a custom dyno tune , unlocking impressive gains across the rev range. 🚀 Upgrades Installed: High-Flow Downpipe:  Optimizes exhaust flow, improving turbo efficiency and throttle response. Custom Dyno Tune:  Stage 1 tuning tailored to the downpipe and engine for maximum performance. POP on Deceleration:  Added sporty exhaust pops for that aggressive sound. Performance Results