When I bought my Scooby the tit who owned it before fitted a equal length manifold and me Scooby dunt do what a Scooby should which is burble. It's is decatted with a full system. Can I change me manifold back to a unequal and if so will I need to get it remapped. It's already been remapped if tha makes a difference.

 

Bttt

 

yes you can change the manifold back to an unequal one but you would need a map tweak. so if you are going to change them you may as well do it alongside a few other mods and then get it remapped