Thank you very much for the information

First I wanted to apologize for my English. It's horrible and I'm using a translator I have a Mazda 6 MPS European version with only two modifications. An intake kit and two handmade exhaust lines. https://i.postimg.cc/KRQVTsRV/admision.jpg https://i.postimg.cc/w1vrQcNB/escape.webp The Engine is com...