B13 silencer...

Hi.

I have a B13, GA13DS engine 1295cc

there are 3 small holes in one side of the silencer, and this is giving a noise and odd smell of gas..

i think the FC has also increased because of this..

Do i have to replace the silencer? or will a patch for those holes will work?

If i am to replace , what are the things do i have to consider in the new silencer..

Thanks for any replies..

just have a new one bolted in at teh muffler shop, prolly shouldnt be too expensive