unifilter again

Mate i don't think min or synt will have any different effect on the airflow sensors ( happy to stand corrected ) . This is because the airflow sensors that are affected are the 'hot wire' type. They operate on the principle of a constant voltage being applied to one side of the wire, as the air flow passes over the wire it cools it down ( more air - more cooling ) and changes the resistance, and you have a differential voltage occuring across the wire. the computer uses this voltage difference to calculate the airflow mass into the engine.... So if you have a coating on the wire you change its reaction to the airflow, and get different readings...

Small air bleed ports in other components can usually be easilly cleaned as well.

That is just what i know about efi etc. , like i said happy to be corrected......

Just sent Unifilter an email to clarify about useing there filters on efi diesels

Gerk,
I have had paper, went to a Unifilter, and now I have a K&N filter in my GQ 4.2EFI patrol.
I found the Unifiler provided a huge increase in the ability to suck air thru the filter and stopped the air mix light coming on at around 3500rpm. The K&N filter leaves the Uni filter for dead again !! The accelaration has increased enourmously again over the Unifilter. we went away recently before easter,a nd passing road trains with the car full was impressively fast.
I cant say enough good things about the K&N filters, they leave the paper and foam oil filters for dead.. in my experiences anyway..
the K&N filter is 6-8 layers of cotton gauze sprayed with oil..
If you are going to change filters, spend the money on a K&N, you will never need to buy another filter, they come with a 1million mile warrenty...
Bryan..