hs header problems?

[Celica maniac]

i just intalled my hs headers, everything looks fine but when i press the gas pedal there is a vibrating noise coming out from somewhere around the headers. i just cant tell where the noise is actually coming from. does anybody has this problem too.?

[DopeCelicaGT]

Did you replace the header gasket with a new one???? It sounds like an exhaust leak to me!!!!

Justin

[byebyebaby]

May be bolts are not tight enuff....:)