Here is the thing.
Looks like previous owner smoke in the car, and it somehow smells funny.
Esp when using aircond. And there is a clicking-clicking sound behind the dashboard which i dont know what. It...
im putting 3" straight flow piping with 3"exhaust, i felt so noisy so decide to fix up my exhaust silencer...the silencer inlet comes around 2.2inch only at the back end there..so will it be harmful towards my engine...