I had the misfire like the majority of people here. I replaced 6 coils and I think it's slowly coming back.... I had the gasket cover changed and he oil cap was also leaking. Why the hell would it all happen again? That subwoofer sound that vibrates the whole car anyone know what it is? Does anyone get a burning smell when the temp drops below 60? I had hoses changed and can't figure out what is causing this burning smell. Is it a leak?