Thank you
Bike shows build date of 09/17 so it is 2014+ vintage but the VIN number is the odd part since when I look at TUNE ECU pages it breaks out :
Rocket III Roadster 2300cc / up to VIN # 574812 / Keihin ECU
Rocket III Roadster 2300cc / from VIN # 574813 / Keihin ECU
- So going by VIN Number of 857443 the bike would be "earlier" vintage - hence my confusion
Looks like I should go with later model assumption and use Hans0 tune for 2014+ Roadster, TORS, triple /Ramair filters etc