AROC 916 Registrar
AO Gold Member
Join Date: Nov 2002
Location: United Kingdom
We have had this discussion so many times, it's worth a search.
While no one argues the job a resonator can do, in this instance, on the Gtv, is it purely for sound.
The early Twinnies had no resonator at all and when the later ones had a box added, they didn't gain any performance. Many of us have removed the resonator box and have no difference what so ever in the engine characteristics, other than a slightly increased sound.