My 182 has been missing majorly so i've had some iridium plugs fitted which didn't cure it, changed the coil pack which has improved it no end but it still missing slightly (it was major at the beginning). I heard that after market leads are pump however i went for some 8mm magnecor. They're not comin until the new year as they're being made today (gutted) so until then my 182 is sat on my drive doing dick all til then. A specialist also if either the coil pack or a lead has gone then the chances are a few weeks later the other will go so its usually worth changing them together whether he wanted some extra cash and was spinning me a line is 1 thing but as i said the coil pack improved my miss fire but didn't cure it so there could be some truth in it.
What makes it worse I had a milltek exhaust fitted at the same time so i don't even know what it sounds like been ragged, good things come to those who wait apparently!!!!!