by Dragonheart » Thu Apr 03, 2008 11:00 pm
No you wouldnt need a standard one for nct. Technically the after market ones are supposed to be a better quality filter than the standard ones, better for the engine and that. Think formula one cars use K+N (correct me if I'm wrong), so if they use them then they must be good quality. So anything that improves the quality of an engine and hence makes it safer is a good thing and safety is what the nct is 'supposed' to be all about.