Hey, im looking for a header presilencer combo. i know racing beat has them and mazdatrix.. and how much do presilencers silence? is it a lot or? i've never heard one so i have no clue. thanks.

I was once told, yes you need them unless you want your car's exhaust to sound like a chainsaw.

Even with them your car can sound like a chainsaw. It depends on the muffler too. I take it your car is a NA even though your sig says you have a Jspec 13b. You'd be best to get the full RB exhaust if you are concerned about noise. Just about anything else will be pretty loud.