SInce I purchased my VR6 it has been stuttering a bit and has gradually got worse! Today I was driving it and go to about 80 on the motorway and it was just so juddery and stuttering it was unbearable really. Also had a few pops also from somewhere, could that be the cat that's gone? It's had a service 2000 miles ago so can't be that needs doing. I'm new to the watercooled thing so i'm still trying to find my feet really. Anybody any ideas? Thanks in advance.