Hi. I am currently in the process of buying a blob sti which has already been mapped. It has the pro drive exhaust on it but it is a bit too quiet for me. Can I cange the exhaust without needing a remap? Thanks in advance for any replys

 

If you are only changing the backbox it doesnt need remapped.

 

Ok thanks. What about if I removed the resonater.

 

Still will be fine.