My '04 950 Adventure has the exact same vibrations as your bike and has had ever since I bought it last year. The thing is that the vibrations on my bike come and go, though. They are mostly there, but once in a while they disappear. When such a magic moment occurs you better be on a really nice piece of road, 'cause you never know how long that joyous moment will last. It could be half an hour or a couple of hours. My observations of the phenomenon are quite similar to yours. The engine pulls good and runs smooth even in low rpms. It's only the vibrations on rpms from 5k and up that's causing frustrations. Apart from what is said earlier in the thread I could add a few things. I've noticed that the exhaust sound changes slightly when the vibrations disappear. The noise level (yeah, I've got Sebring silencers) is normally really annoying. When you happen to have a blessed day (more like hour) without vibrations the sound level is much lower than "normal". The funny thing is that the engine performance at the same time gets even better. I have no idea of what is causing the vibrations. The gut feeling I'm having, and have had even before I started reading this thread an hour ago, is that it's not anything mechanical. I have tried a few things: Dr_Bean fuelpump mod (pump wasn't working ok due to worn out contact) Removing EPC (SAS already removed) Running a tank with carburetor cleaner Checking TPS (within spec's, albeit at the lower limit) Checking pulse sender (don't remember values, but a bit low in voltage I think) Replacing battery Checking coil resistance Worth to mention is that when I first removed the coils I noticed some sooty dirt/residue on one of the coils. It smelled a bit like burnt electronics, but I didn't reflect on it for too long. Then I believe someone in this thread suggested that the coils could be suspected. As a matter of fact I asked my KTM mechanic about the coils only earlier today when the bike was at the dealer for 30k km service and we spoke about the problem. His response was that he didn't think they were part of the problem. I'm not so sure about that... The intermittent nature of the vibrations makes me believe it has something to do with ignition or the electrical system somehow. When I bought the bike it was equipped with HID lighting. I know such equipment can destroy a lot of electronics in cars, even properly mounted. I think it can cause transients in the 12V system that in the long run break sensitive components. The most sensitive part in our bikes' electrical system is the ECU. At last, a question: Does anyone know how to properly check the ECU for damages?