Sorry to be numb but one last question if you don't mind.
If I had the AR manifold and cat fitted but kept my factory standard original silencer and tailpipe, presumably I could add the twin piped sports silencer at a later date if I am not happy with the sound?
Also, does the sports silencer affect the performance in any way or is it just about aesthetics and noise with the manifold and cat making the difference in oomph along with the remap?
