Air filter, which is best: Stock, K&N, BMC?
03-08-2019, 08:48 PM
#31
Rennlist Member
Think you have misunderstood previous reply. If the air pressure loss from the air filter is less than the restriction on the exhaust, the backpressure loss on the exhaust will have the biggest significance. In other words, an air filter pressure loss of 0 with no air filter installed will not give a better result 
, Intake influences volumetric efficiency, back-pressure influences amount of residual gas in the combustion chamber, you can increase volumetric efficiency and still have the residual amount.
03-08-2019, 10:28 PM
#32
Three Wheelin'
Once upon a time I ran K&N filters in everything I owned. Then I felt inside the intake tube of one of my vehicles and there was fine dust on the inside of the tube. Removed all my K&N filters and chucked them in the garbage. Paper filters ever since and no fine particles anymore.