Long story short, I believe my MAF is playing up (jumpy idle & rough low end revs occasionally & once I unplug and plug back in and restart car its fine) Ive just bought a 2nd hand replacement MAF & Im currently using a K&N Panel filter, Ive been told these damage/Cause issues with the MAF due to the Oil, What NON-OILED filters are there out there? Ive looked at green filters & Pipercross on demon tweeks but they say the come pre oiled?