What year is your swift and was it made for the US market?
Centrafuse will support all ELM327 compatible interfaces so it will be able to get the OBD readings provided you get a compatible interface, but the interfaces require an OBD II compatible vehicle (all 1996 and newer vehicles in the US will support OBD II)
I make an interface that works with centrafuse. Check out
www.obdpros.com
Paul
www.obdpros.com