foam air-filters...
I think a few of you are running "monster flow" air-filters on your P5s.
I was wondering how well they been working? I've had good results w/an ITG foam filter on my 240z, and would like find something similar for the new family car... thanks, manny |
I've had bad experiences with foam filters. After running one on my CAI for a few months, I'd take it off and find dirt on the inside of the tube. No such problem with my K&N cone filter, which I've had on there for years.
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I've also been told to avoid foam filters. They have a tendency to gradually disintegrate and allow foam particles to be sucked into the engine, which can't be good :eek: I used to own a 240Z, and I used a K&N because several of my friends had this problem with their foam filters.
AFAIK all of the common intakes for 99+ Proteges use K&N-style cotton gauze filters, and I recommend this type of filter. My car has a drop-in K&N. |
I have also heard that foam is more resistant to air flow. I also just dropped in a K&N and fuel economy has gotten better. :) Although, my last filter was dirty, but not enough to fail a Drive Clean emmisions test. :) K&N drop ins on 2 cars now produced better mileage. :) :)
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Actually, I have read that GOOD foam filters flow better than K&N filters. I think either one will flow much better than the stock paper filters.
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Originally posted by ProtegeES Actually, I have read that GOOD foam filters flow better than K&N filters. I think either one will flow much better than the stock paper filters. No offense, but reading and experiencing are two different things. Where did you get this info? |
Back when I had my 240Z, it was a well-known fact that a foam filter would make more power than a K&N, but K&N's didn't gradually come apart :eek: Clean foam filters are VERY non-restrictive, they just have problems that make them a poor idea on cars that see a lot of street miles.
However, I will admit that modern EFI intakes are different than what you'll find on a 240Z. Most EFI cars breath through one intake tube, while a 240Z breathes through at least two open-ended airhorns (and probably three, if it has triple sidedrafts). |
I think your right...
I probably shouldn't compare how my dual SU's benefit from foam - vs - a modern FI setup.
It does however appear that the K&N filter is preferred for P5 owners? thanks, manny PS. the other day I asked my honey her opinion on aluminum pedals for the P5, by showing her a few examples. Her reply was - "Which pedals are on the 240? I don't want an imitation..." |
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