RENNtech has developed a stage 1 tuning kit for the Mercedes-Benz CLA 45 AMG, with its neck-snapping 2.0-litre turbo four-cylinder. Thanks to a simple plug-in engine computer module, customers can boost the CLA 45’s engine performance by over 15 per cent. In standard form the 2.0-litre turbo produces 265kW of power […]