Hello, I’m currently driving a Leon Cupra 300 (hand-operated, 5-door (no ST), built in 06/2017) and would like to increase it from the power to approx. 350 – 400 hp. In this context I would like to change something about the exhaust system. It should sound a little louder and duller/bassier. Unfortunately I don’t know about it very well. Can I give jmd. tips and possibly post experiences, which tuner of the price/performance is good? Thank you and Best regards