[FD3S]

Superspint Stepped headers V1 are considered the one that make the most HP for our cars. Does anybody know if it worths making the transition from Euro Headers to SSSV1 Headers?

My mechanic mentions that Euro headers is the only thing I will need for my car and that the gains will be very small if I go to SSV1 stepped headers. Other threads mention a lot of HP gains but from US headers.

Also can SSV1 stepped headers work with stock mufflers?

What is the expected HP gain with the SSV1 stepped headers with a custom tune?