Thanks for the reply.

It has a dynojet 'autotune' 2x1" box along with the power commander under the seat.

Upon closer inspection there is also a chunky dynojet branded connector (adaptor?) under the the tank that the o2 sensor feeds into, and a 4 pin connector dangling from above mysteriously. I pulled apart the chunky dynojet connector and it seems clean. I assume the dangling one is meant to be disconnected.

Light still flashing