Well I think they are all misleading you here. There is NO exhaust option on the series 4 Aero. The ONLY option is side exit pipes
Well what would you expect me to post? I am the acting Squadron Leader of the SPS (Side Pipes Squadron)
In reality I would simplify it thus:
Standard exhaust - quiet but acceptable (just!)
Twin sports - permanent V8 rumble (ala TVR) quite loud to very loud all the time.
Side exits - Quiet at tickover barks like a spitfire. Loud as revs rise, imagine being overtaken by two Harley Davidsons.
My preference? Ooh take a guess
Hope it helps
BtG
