Finally swapped out my K&N Panel Filter for an AEM Dryflow Filter. Naturally with the MAF scaling it required another tune/remap to cater for the changed airflow, so got that done and lost a couple of horses in the process. Only about 5bhp, but I made an extra 20ftlbs of torque which is a good tradeoff in my book. Less horses but more torque is always a win. And I get that sweet sweet induction sound that a panel filter simply does not give. Now Motoko truly sounds like a turbocharged car.