at around 80mph it climbs then misses every couple of seconds but if you let off a little it is fine ! any way it cant be anything serious as apart from that it runs like a dream !
I had this with my Scooby when I first bought it and it turned out to be 2 of the Coilpacks were cracked. Take them out and pull the rubber boot on the end of them off and check for any cracks m8.
Once I replaced these on my car it has ran smooth as a baby's ever since
Nice motor by the way m8
Mo