2007 DL -1000 w/ 6K. Bike has been pretty constantly doing this sputtering for a few weeks now (no problems prior ). Mostly at a consistant speed and RPM (3000 to 3500) . Sputtering / caughing seems to come from the intake (but just guessing ). It stops with change throttle position either way. I'll check out the intake manifold clamps that someone mentioned . My bike has a two brothers exhaust / K&N filter . Might a powercommander chip help with the lean running problems mentioned in the forum?? Any advice appreciated. It's my only problem really, well bike related anyway. Thanks in advance.