Ahh CRAP! My coil pack turned up today. Fitted this evening and its still the same.
I've booked the car into Vauxhall for next week for a diagnostics check on Tech 2 and check valve timing if required.
I had a long talk with the chap on the service desk about the spec of the car and he mentioned that the cams coupled with the lightened flywheel may be causing a lumpyness on tickover because of the weight has been greatly reduced with the flywheel?
Either way, by next Thursday I will know one way or the other if its just a characteristic of my mods or if there's is something more serious.
what..