I'm getting a slight bucking at low rpms, steady or slight throttle. Noticed it today on 3rd gear in 25 mph zone. reminds me of carbureted motor loading up at low revs. Seems to pull OK otherwise. I changed DISA and various rubber boots a few years ago, and cleaned the ICV. In hot weather , I occasionally get the dreaded idle drop and recovery, so I have a new ICV to install sometime soon. No codes. Thoughts?