i was told by techlusion USA & TTS that the 259 is better suited for folks keeping the cat & the 1030/1 was what you wanted for y piece & can etc.
never did see the logic in that but that's what i was told.
1030 models have to be spliced into the trigger wires for the FI. a bit tricky as the wires are pretty short, hard to lengthen 'cos of access and also rather thin guage.
techlusion supply some of those nasty connectors that cut through the insulation to connect. name for these aboninations escapes me, i must have purged it from memory*.
i would avoid such a bodge on my bike.
*i've remembered: Insulation Displacing Connector