Forgive me if this isn't the right place to post a question like I have and please direct me to a better forum.
I own a 2012 bmw r1200rt with 62k miles. I have been having engine issues. The primary symptoms are:
1 ) The problem never is apparent at first start. I think it would idle after start forever without problems.
2 ) While riding, at times the bike will surge, and have problems maintaining a static speed.
3 ) During these times (#2), it is very difficult to throttle smoothly. It seems that the throttle is on or off. If I grip the throttle tightly and not let it speed or coast as to maintain a static speed, the bike will tend to surge back in forth.
4 ) During these times (#2), if I pull in the clutch, the bike will likely stall. At minimum, it will idle very rough.
5 ) If the bike has stalled because of #4, it will not restart. At best, it will barely start and idle extremely rough.
6 ) When I notice #2 and it is still running, if I twist the throttle to full (while still in gear), it immediately smooths out and runs well . . . until it doesn't again. I do not need to let the throttle snap back, I can just continue on my way after full throttle.
7 ) The exception to #5 is, if before I attempt to start I twist the throttle to full, and let it snap back, the bike will start right up and idle smoothly without any throttle movement/twist.
8 ) The issue in general has been progressively getting worse. There are sometimes long periods of time without displaying any symptoms, however, lately every day I have taken it out, I have noticed some issues.
I have attached real time gs-911 data in csv format. One can see on line 471 where the throttle position is full (column L). Prior to that it progressively ran rough until I pulled in the clutch and it stalled (467ish). The bike ran smooth after the restart.
All 4 coils have recently been replaced. As have the spark plugs. Service has been maintained consistently by the dealer every 6k miles as it is still under warranty.
Any thoughts, help, suggestions, or assistance is appreciated.
blckhd