[928uk] 928 air filters

[Simon Watson]

+1
Hi Roger, you just beat me to it!!
Yes exactly right. Don’t use K&N filters on a 928 because the oil mist gets sucked past the sensitive MAFF filament and damages it. Paper filters are best and OEM ones are inexpensive from Euro Car Parts. 
Best
Simon

Sent from my iPhone

> On 20 Feb 2023, at 17:26, Roger Tyson via 928uk <928uk at lists.928.org.uk> wrote:
> 
> I am pretty sure that no one uses a K&N filter on an 84 to 95 MAF car due to
> the damage to the MAF.
> I have a pile of them here in the shop - we remove everyone we see.
> A K&N requires oil and that is what damages the MAF.
> No oil and the K&N will not work.
> Lots of good advice on Rennlist about the subject.
> Use a stock filter.
> Roger
> 
> Roger Tyson
> 817 430 2688
> 928sRUs Inc.
> 131 Timberview Dr.
> Double Oak, TX 75077
> www.928srus.com
> 
> If it is on a 928 and available - we sell it.
> 
> -----Original Message-----
> From: 928uk <928uk-bounces at lists.928.org.uk> On Behalf Of Jonathan Rackowe
> via 928uk
> Sent: Monday, February 20, 2023 8:52 AM
> To: 928UK List <928uk at lists.928.org.uk>
> Cc: jonathan at netvue.co.uk
> Subject: [928uk] 928 air filters
> 
> I have had a K&N air filter on my 928GT since April 2012. It seems to have
> performed okay, with just a shake and clean with a paintbrush as maintenance
> each year. I have also had K&N air filters on my MGB since 1985!
> 
> 
> 
> Last Autumn I decided to clean and re-oil all the K&N filters using a K&N
> re-oiling kit. The MGB ones were fine, but when I came to look at the one on
> the 928 I found that the rubberised plastic surround had cracks and was
> crumbling in places. As I don't want little bits of rubber-plastic getting
> onto the MAF screen, I removed the K&N filter and spoke with the company
> about it. I expressed my dismay that the 928 filter surround was breaking up
> after 10 years and 26K miles, when the ones on my MG are still good after 37
> years and 60K miles! I offered to send them the air filter for inspection
> and comment, but as I don't have my receipt from 2012 they weren't
> interested.
> 
> 
> 
> I see that Mahle LX311 OEM filters, Pipercross PP1211, & K&N 33-2591 or
> 60131465 filters are available. So my questions to the group are:
> 
> 
> 
> Has anyone else experienced the surround breaking up on a K&N air filter?
> 
> If you are NOT using the standard Porsche air filter, which aftermarket one
> are you using?  
> 
> Has your experience with the aftermarket filter been good or problematic?
> 
> Best regards, 
> 
> Jonathan
> 
> 
> 928 GT 1991 Amethyst Metallic
> 
>