Blasted air through the front pipe and muffler with the compressor, got a lot of particles which were probably remnants of the OEM header cat. Haven't decided on what to do with the header as yet but we replaced the over pipe (flange was warped) which fixed the exhaust leak. Obviously it threw the P0420 CEL after about 30mins of driving but not concerned with that right now.
Car has OEM A01G tune in it with no alterations. Did 2 log sets:
http://datazap.me/u/dave/stock-oem-a01g-tune
http://datazap.me/u/dave/stock-oem-a01g-tune-pt2
I know the OEM tune had some minor knock on our fuel so I'll flash the
OFT V2 Stg1 A01G T K S 98 ROM to start with and do another set of logs tomorrow as a baseline.