They dont get to the point of saying, when they are recharged people tend to over oil them = possible problems.
I've had a K&N on all my Vauxhalls, and never had an AFM problem. Even the CDTI with it's rev limit and boost cranked up hasn't had a problem, and it's shifting a proverbial shit-load of air through the airbox.
2007 Metro Blue 5 door Mk5 Elite 1.7CDTI
6th Vauxhall (4th Astra) in 10 years...plus a couple of other sheds...
The point is that the AFMs fail with paper filters as well as oiled aftermarket ones.
A dealership will find any reason not to honour a warrently replacement if they can, why would they not? When my bro has a water pump fitted in his XE engine they told him I would have no warrenty as the engine was fitted in a MK2 Cavalier..........you explain how that makes a difference?
The problem is most people who modify cars and talk about their problems on a forum will have fitted an air filter as it;s one of the first things you do to a car.
The Z-Let AFM is very poorly made, you don't see problems with others do you? Is anyone suggesting the oil from a filter is selective as to what AFM it will kill?
I'm with K&N on this one, oh and fitting a VXR AFM to a Z-LET engine!
Tell me what you've done, not what you're going to!
Well I had a 57i kit on my old SRi turbo for a good few years - funnily enough, no MAF sensor failures!!
2006 Astra VXR on 19's in Arden Blue
ExhaustsUK Catback, Eibach Sportlines, DS Ultima, Roose hose kit, Forge recirculating dump valve, Full self modded SMD conversion
They look like they have backed up there case with some real hard facts and tests, the speculation that oil damages a MAF has no evidence to support. Blaming the K&N is completely to the advantage of the dealer - no warranty work, sell more filters, easy excuse for vehicle failure.
Im with K&N.
Great post Jam !