Missfire on hard acceleration

[glena]

Took the old girl out for a blast yesterday whilst the road was dry, and after a 15min warm up I had a few foot to the floor sessions, she generally runs like a dream but I noticed under hard acceleration she missfired intermittently. Anyone got any suggestions?

[2 sheds]

First thing to check would be spark plugs, have they been replaced recently ? (NGK B7ECS are the popular ones.)
Tim

[jigs]

Does the old girl eat alot of sprouts?

[siwes]

coil amplifier, feels like the rev limiter coming in
regards simon