Seeing as you’re fishing….
I had a 2018 R1200GS Rallye brand new and fitted Remus headers, Remus end can and removed the exhaust valve. Took it to Hilltop and had it remapped. Bike was amazing and faultless, so good the 1250 I test rode 18 months later just felt flat in comparison. (If I’d done the same to the 1250 I’m sure it would have been better than the 1200 but it was just stock with an Akro end can).