87 765t
Today while driving around i start feeling like what i would call a miss on a cyl or 2. It went away but came back a few times throughout the day, the car still ran but had this bump on and off.

Heres what i know

The tach follows exactly each bump, happens wether turbo is engauged or not, at idle or driving, in gear out of gear does it off and on, on the way home it pretty much did it the whole way, the car ran fine other then this bump and the slight loos of power each time.

I have a nice new shiney head on the car now,and i have just installed a nice new intercooler turbo hose so i know the hose isnt collapsing. though ive only had it a few month's, im still working out the bug's, before i hit the pick yard tomorrow id like to get some thoughts on what this might just be.

Any idea is welcome, i of course i have my own idea's but i like to hear everyone else to make sure i am covering all the basis before i tackle a problem which isnt so noticiable.