fox128

I agree with so. thunder, I just put a BHAF on this week and I was really impressed with the difference it made. There was a noticeable increase in throttle response and the turbo spooled up quicker. I'm even running and Outerwears and they are supposed to be quite restrictive. And I also enjoy hearing the turbo sing a little louder

Superduty

Here is the catalog page for the BHAF. It is a Donaldson 105006. 680 CFM at 8 in H2O. Notice how it has the flow AND the pressure. You need both to have a meaningful comparison.



If you need to see more of the catalog to be sure I am not pulling your leg, check my gallery.

Here is the text from a stock Dodge filter. Max flow is 19.12 m^3/min = 675 CFM. That is probably where Wix got the number from. Notice the "pressure loss @ max flow" is 0.035bar, which is 14 in H2O. Not 8 in H2O. At 8 in H2O, this filter will flow about 510 CFM.

DON'T POST FLOW RATES WITHOUT PRESSURE. It only confuses the issue.

Bart Timothy

The dyno isn't real world, and doesn't make up for air flow around a moving truck, but is a much more controlled means of testing than seat of the pants. My question is if you can't see increased spoolup on the dyno, in a controlled test, which should show a faster horse power rise and more area under the power curve, then how the heck are you ever going to feel it on the street?

Ph4tty

Superduty's #'s are right. Here's a link that will show the same thing for that filter: http://www.donaldsonfilters.com.au/u...ew%20Draft.pdf