Anyone have actual Dyno or Track 'hard numbers' comparing OEM stock vs. K&N, Holley, etc....? How good do these high $$ filters actually flow?

I'am looking for actual comparisons and not just 'seat of pants' feel or opinions.

Thanks for accurate replys.

Enjoy your cars.

 

At our local speedshop, they have a demo thingie that compared a FRAM,K&N,GREEn,HOLLEY. Where there was air flowing thru a tube and it was holding a ball at the top, once you put the filter on, its suppose to show how much the air flows thru the filter. If the ball drops, its a crappy flow, with the fram it damn near droped all the way. With all the other 3, it seems they stayed towards the top, actually I think the GREEN one was the highest. I dont know for sure, it was just some stupid demo.