i used to have some DC headers and i traded my friend for brand new SAFC and we took off the headrs and put the stock one back on. and i noticed that im gettin a header leak because the stock headers doesn't fit in with megan's straight pipe. is there anything i can do to fix this?

 

Did you use a new metallic donut gasket? Each time you put on a new component, the old gasket will have its own shape and may not conform to the new connection.

 

mmmmmmmmmmm donut.