shustermeister

For 30k mile service on my 2019 Cayenne S, had my indie shop change oil, filter, cabin filter and engine air filter. They suggested the BMC filter for about $300 in case I ever want to put a tune on the engine. My uncalibrated butt dyno feels like the car is running smoother, slightly better pickup. Maybe the old filter was simply dirty but I wasn't expecting any perceivable performance gain. Anybody else using the filter have any feedback?

philg3

There was (is) a thread on this subject in the early Cayenne forum around 2003-2004. Some of us went for it (BMC filter), there were claims that engines could breath again, more power and so forth. Then, a few people were concerned about the BMC filter being less effective against removal of smaller particles than the Porsche supplied filter. I didn't want to risk it, and put the Porsche filter back in. Had the Turbo model back then.

shustermeister

Good info, thanks for the reply. This is my first Cayenne so I would not have looked that far back in the forums for this. I had a BMC filter in my former Cayman track car, and had not seen much talk regarding filter effectiveness in that forum. Makes common sense that a more free flowing filter would likely allow larger particles through, but Im sure the filter companies would likely say otherwise. My indie shop suggested the BMC, figured I would try it out.

LDT

Just like your home in which an inexpensive particle filter properly replaced and maintained will do just as good of a job as an expensive multi-faceted filter.

cwazyeurodrivr

No way would I put in a aftermarket filter while under my remaining factory and 3 years of CPO warranty ... don't want Porsche techs questioning anything or telling Porsche HQ and they void the warranty for somet stupid reason