Hi, just replaced our k12's airfilter and a bit suprised but the apparent quality difference between the two Mann branded filters. The older red coloured one just seems so much higher quality. I actually asked Mann if I'd bought a fake but they said- not a fake that's the same quality a same performance as the older one. Kinda doesn't look it though does it? I'm new to micras so what's the nissan genuine ones like? Cheers