I had the two Bosch injectors for my 1994 BMW R1100RS cleaned and flow matched years ago by this shop in Depere WI:

https://dsgbinc.com/

They said my injectors, at that time with 150,000 miles on the bike, were very clean and required little work. But I rode the bike regularly and at least twice a year ran Techron in the fuel, and always used premium whole gas. I use NO E10 or E15 crap in any of my small engines, never had a fuel related issue with any engines.


My 56 C3-B8 Dakota build