Nor for most.... about the only thing about the K&N's that is confirmed is that they are somewhat less resistance to airflow than a pure paper filter. That comes with an (unacceptable) price unless you are OK with replacing engines every race like race teams do.man on the mule wrote:Maybe the K@N works wonders for some,not for this kid.
Or, just do like indy cars did and don't run a filter just a screen to keep out gravel. Oh wait. IRL now uses K&N! So does NASCAR, which requires filters since otherwise teams would not run them.
I had the opportunity to be in the pits for two CART races with Bobby Rahal's team. Lot's of things they do, even warmup spare engines and keep them in a thermal blanket.
I asked about oil, and they laughed. Plain jane shell "fire & ice". When I asked about synthetics, they explained that the race engines do not run long enough for oil specs or air filtration to be an issue. They maximize for performance, since the engines are rebuilt each race with new parts anyway.
So the fact that xyz racing team uses K&N is simply not relevant to our vehicles.
There are ways to tell if an air filter is a restriction or not. The easiest is to compare atmospheric pressure with the manifold at WOT. Easy to do with EFI, and is how I know the pinz filter is not a constraint. There are acceptable differences. A better way is to put a map sensor ahead of the throttle body, and compare that to atmospheric. Will be a very small difference if any to atmospheric.
Have fun,
Alan