K&N drop ins plus PMTs here and very happy with them, 80-90% performance of the best CAI's (like the G3) at 30% the cost.
For those really worried about fowling the maf's with the oil, it's over oiling when recharging them that can do it, so just sell or toss the filteres every 20-30K miles and buy new, that's what I do, or more accurately, plan to do and they're not expensive so problem solved.
