More power for the Mercedes SLK200 1.8 R171 can be made using an upgraded full exhaust system and an upgraded supercharger pulley hub. This allows for more boost and less exhaust gas backflow. Both of these upgrades make the engine more efficient and the performance results are clearly visible on dyno. With the stock injectors
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The stage 1 upgrade for the Mercedes SLK 200 1.8 163hp for 98RON unleashes the performance hidden in the stock supercharger. This upgrade is aimed at R171 models with 1.8L KE18ML engine, also known as M271.   How it works The stock supercharger on th eM271 engine uses a bypass system to control boost. A