No back pressure on my c300
No back pressure on my c300
I deleted my 2 resonators and replaced my 2 mufflers with valvetronic ones but kept my cats on i felt like a decrease in performance and sometimes the shifts feels weird and i'm assuming it's from the deleted resonators which lead to no back pressure does anyone know what should i do but i want to keep the same sound i heard about the bottle resonators but i dont know if they are shambered which will fix the back pressure does anyone have an idea?


