Registered Forum User
Big Twin
Posts: 1,388
Join Date: Feb 2006
Location: Newick, East Sussex
Mood: Waiting at the Crossroads......
Mine used to do something very similar......as well as popping on the over-run.....used to cut out when I gave it a big mittfull of gas at low revs too.
Took it up to MD Racing in Ewell for an annual overhaul and Mike completely re-mapped the chip.
It's been utterly perfect ever since.