Great filter. Very noticeable difference in spool up and improved MPG. It does have a whistle to it and you can really hear it grabbing air when you put the throttle down. Fast delivery as well. Thanks Clay I am always happy with the products and customer service you provide.

Work great can hear the difference

Looks great and sounds amazing. Definitely notice spool with filter and WW2. Great filter.

Really helped my engine breath. I went from a 6637 to the AFE big boost and noticed a big difference! Big upgrade highly recommended!

Can definitely hear more air being drawn into intake during entire spool up. I can hear the whistle more now, can wait to hear it after I get this 1.0 housing and Billet wheel on.

Upgraded from a6637 to this and it really made a difference, truck can breathe now.

I upgraded from the 6637 filter. I have to say the big boost filter definitely lives up to what everyone has said. Definitely know it's breathing better. Can hear the turbo better. Fuel mileage went up. Overall great product when it comes time will be getting another one.

Absolutely love it and recommend to everyone!

Looks sweet, sounds sweet. Worth the money