kaki moto, loud yes , pops and bangs ,yes . im 50/50 whether id go for a far quietier volume system as it does draw attention , even at low speeds . and then when opened up , it roars . thats the good part but would consider a more stealth sounding car ,instead of being heard from so far away . only earlier today i was in MCG(local car shop) in kells and was eyeing up a adjustable silincer . and wondered if fitted to a no-catted system would it affect back pressure or the likes as exit hole would be reduced from 4.5 to about 1.5 inchs . any one know ????