Teothe1nonly

Hello, so my car has the high resolution signal code that comes and goes. I don't really understand how it comes and goes but it does exactly just that. It drives fine, then out of nowhere above 4000rpm, it hiccups and throws the code. I noticed cylinder number 6, the spark plug boot has what looks like a cut in it. Can this cause the code or am I wishfully thinking and I should just replace the opti?

JimLentz

Opti unfortunately.