So, in January I purchased a 1.5 2018 Honda Accord. I put a k&n intake kit on it, and cut the mufflers off to give it a little sound. So, here we are, only a few months later and all of the warning lights are on, along with sputtering. I changed the spark plugs and injectors, and been to the dealership three time. The dealer claimed that because i put the k&n intake system on it causing this issue. So, I took it off and put on the stock, three days later. You guess it, back on, I called the dealership and now he is telling me that because someone cut the catalytic converter off it's the car is running rich. Note I said mufflers and not the converters, I'm burnt out mentally. Had the car only three months, only put 4k miles on it.