Thread: D2 air filter options

Have a look at this
http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm

I had a K&N on my 3.9. went to Jerilderie via Wombeyan caves , where there is white thick dust and found covering on MAF etc.

Also MAF wires were coated in oil. Cleaned oil off MAF with electronic cleaner and mixtures were completely different. Had the car dynod with the dirty MAF and then after cleaning. The operator had richened the curve enormously and now was running 11:1 on wide throttle.My assumption is that the oil/dirt on MAF leans the mixture down low.
A report on Internet on the Hitachi MAF confirms this and it is because the Hitachi on a 3.9 does not have a "burn off" wire heating phase.
So the oiling problem may only apply to 3.9s. But the efficiency of the K&N filtering dirt is the BIG problem as per the report.
I sold mine.
Regards Philip A

Okay, im persuaded to leave the dam thing alone and stick with the standard paper ones.

Thanks for all the input and opinions, very much appreciated.

Aye, Mick