I've got some 4-2-1 headers on my car and they are making an awful lot of noise. If I listen from under the car while someone rev's the engine, it's very very loud right between the front wheels. There is a little mesh part of the pipe (I assume to provide some play in it) and maybe the noise is coming from that. I was wondering if some type of header wrap or sound deadening material installed on the exterior of the car would help.
The major annoyance is at freeway cruising speeds, it causes quite a bit of droning noise that gets annoying when you are trying to have a conversation...
The major annoyance is at freeway cruising speeds, it causes quite a bit of droning noise that gets annoying when you are trying to have a conversation...