<VV> Air Filter Tests (no direct Corvair)

[Dave Keillor]

That's true on a carburetor engine, but not necessarily on a
computer-managed fuel injection engine.  On those engines, the air flow
sensor will increase the fuel to keep the mixture correct.  Still, the
improvements of a high-flow filter are marginal and (IMO) don't offset the
decreased filtering.

Dave

-----Original Message-----
From: corvairs [mailto:lonwall@corvairunderground.com]
Sent: Friday, January 14, 2005 1:57 PM
To: Dave Keillor
Cc: virtualvairs@corvair.org
Subject: Re: <VV> Air Filter Tests (no direct Corvair)


Well, the arguments used by some aftermarket air filter companies have 
never made  any sense. Increased air flow is only an issue if, for some 
unexplainable reason, the factory intentionally over-restricted the 
airflow with thier filter design. Don't think so. Increasing air flow 
(besides increasing contaminate flow) does nothing but lean up the 
mixture unless you have a corresponding change in the fuel 
supply........Bottom line - as I've said many times - if you could get a 
noticible increase in hp just by using filter brand X then why didn't 
the factory use them?  A 10% increase in advertised hp by just using 
brand x air filter? WOW! Lon

www.corvairunderground.com

Dave Keillor wrote:

>No surprise here.  More air flow, more dirt flow.
>
>Dave
>
>-----Original Message-----
>From: Bill Elliott [mailto:Corvair@fnader.com]
>Sent: Friday, January 14, 2005 12:48 PM
>To: virtualvairs@corvair.org
>Subject: <VV> Air Filter Tests (no direct Corvair)
>
>
>http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm
>
>I thought this might prove to be interesting data to consider. (I regularly
>use both Amsoil and K&N filters in most of my cars....)
>
>Bill Elliott
>Urbana, MD