I currently have a nur spec R on the rb320 but it's been slightly damaged by speed bump so the baffles are rattling which gives a horrible sound of a civic not as Scooby at around 3 rpm,so if I change the back box for a different one will I need a remap tweak? It's all decatted already,if it does it's cheaper buying a new nur spec back box ( hint hint ) cheers

 

No , you will not need to remap for changing a backbox