My atr already making some fogging..when idle/traffic light can see from mirror.
Just wanna to know what cause that problem..and cost
1. if from valve seal what is symptom? How to know valve seal...
There seems to be some rustling sound like sands in my exhaust/muffler when i move it around.
I haven't installed them and would like to ask whether there is any way to get rid of that sound and the effects of...