Chop, lag is not bad, being a doubting Thomas i wasn't sure, i knew it wouldn't be as bad as a cossie as it has a bigger engine, but i wasn't sure if it would be ok, we got the big turbo on before last Christmas, first drive & i was impressed, tiny bit more lag but pulls hard to the limiter.
is your mate 'Scottish Greg' on the forums? theres another Greg with a green one (Maxwell on the forums) i was told him & Simon @ Sitech were having a good hack at Knockhill