I bought this from a guy I think was in Belgium over 12yrs ago for my 1150GSA (single spark).
Patria o Muerte
Patria o Muerte
When new the 1150 models came out and ran a bit weak to get round the emission regs, I was under the impression that this adapter between motronic and ECU cable would fool the ECU into running a bit richer.
One reason for me to buy it back in the early days.
Patria o Muerte
why bin? just because it doesnt work long term for 1150s with 'learning' motronics, there are 1100s that dont have lambda sensors nor fuel trimming ECUs, that may still benefit from this mod as they run open loop all the time.
Dont know snelly, mine doesnt have an O2 sensor and (I believe) never did. I am unsure whether the UK got any 1100GS's with O2 sensors, or if they did what year it was introduced, or if it was specific to the GS models. I know some non-UK models had one. Whether or not its got one (or if its used to control fuelling) is flagged by the cat coding plug (in the fuse box), and AF mixture altered with a co-pot if no lambda data available.
Some good info here: https://www.ukgser.com/forums/showthread.php/396459-R1100-Fueling-Open-Loop-Closed-Loop-amp-CO-Pot