FPT Introduces ECU Tuning Software for your 2006-Present C-209 CLK 6.3 L V8!Stock Performance: 474 HP 460 TQTuned Performance: 540 HP 494 TQStock Speed Limiter: 155MPHTuned Speed Limiter: 200MPH+FTP CLK 63 AMG ECU Tuning Software$1,099.99PriceQuantity*ADD TO CART