MAF sensor & K&N filter

[TheEdge]

Hi all just a quick question. Ive been speaking to a female golf fan at work and she told me to be wary of K&N panel filters as they can mess up the MAF sensor but she did recommend pippercross and another brand which i cant remember!, as notified by DAN 32 just wondered how realistic this is as other people on here who have modded this basic filter have had no problems and MAF sensors seem to be @ £80 to replace!!

thanks all

[UKLooney]

K&N filters should be fine as long as you don't over oil them. I have used them on previous cars and have had no problems...

[helfinger]

i tend to disagree with that all oil based filters will eventually kill the MAF. pipercross are just the same unless you do a special order and request it to be dry, no oil. i have specked one that way and it has been fine but ask me again in a few 1,000 miles as they tend to go after 3-5,000 miles.....

[UKLooney]

Give her a slap

From the Horses Mouth

MKV Filter

[rs32]

good find UKLooney

interestingly the filter for the MkV also fits the Passat 3.6

[UKLooney]

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i have specked one that way and it has been fine but ask me again in a few 1,000 miles as they tend to go after 3-5,000 miles.....

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I would not recommend using this as a dry filter, the oil is used to capture small particulates which, if not removed, will cause long term damage to the engine cylinders, walls, pistons and piston rings. It will probalby also reduce performance due to uneven combustion in the cylinders.

[UKLooney]

[ QUOTE ]

good find UKLooney

interestingly the filter for the MkV also fits the Passat 3.6

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And the R36

[TheEdge]

Thanks all for the feedback just getting my wheels refurbished this week and the panel filter is next on the list for end of the month payday!!!!

[UKLooney]

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MKV Filter is larger than the MKIV Filter

[helfinger]

[/ QUOTE ]I would not recommend using this as a dry filter, the oil is used to capture small particulates which, if not removed, will cause long term damage to the engine cylinders, walls, pistons and piston rings. It will probalby also reduce performance due to uneven combustion in the cylinders.

[/ QUOTE ]

if that is the case then why do a selection of high performance tuners such as HKS for eg specify dry filter elements,(for the same reasion they have issuses with oil based filters causing MAF issues) i have done numerous tests of my own with oil based filters such as K&N, BMC, Pipercross and they have certainly been responsible for my MAF sensors going down on my R32 and also on a 1.8T golf in the family.....the dry filter element was spec by pipercross for me with a slightly different constructon to prevent certain dust particles to passing through it, also just to make sure it will be cleaned regulary as well.

All i can say i have spents £££ messing around with filters and i certainly wound not waist my money on them if i had a std car or slightly modified car there are better ways. the only reasion i have had to still get a cone filter is due to the amount of air i need going into the car with 400 bhp. if i could i would put my std air box back on with a std paper filter.....thats my view anyway.....

[UKLooney]

agree, just wouldn't run a filter that is meant to be oiled without oil (had assumed that was what you were doing)

I'm suprised that K&N have yet to come across a MAF sensor with issues due to oil (over 20 million sold) when HKS state that it is a common occurance, who should you believe???

Yes, a dry cotton filter should be less restrictive than an oiled one, and for that reason would be prefered in FI applications as long as its filtering properties are unaffected, but I've came across dry filters which are very poor at removing dust particulates and will, in the long term, damage your engine.