Heard about this from a friend. Didn't believe his claim but when I put it on the truck and used it a couple of months he was telling the truth about the additional 2 miles per gallon. Others even asked if I had done something to the engine. Not hard to install but did have too cut the original air box mounting brackets out on a 2002 F350 at that point no going back.

Easy to an install and it truly makes a difference in my 96 obs I will recommend it

Looks Great, noticeable power difference

Great product as expected from Clay, one thing that was a PITA was getting the supplied pipe inserted in the filter. Coated it with a bit of oil didn't help much, might want to consider heating the filter end to soften it up a bit if you encounter the same issue.

Very easy to install and it really helps air flow to the turbo very pleased

Just got my 6637 intake kit today and it installed in minutes... Wow am i impressed. Its like a whole new truck! Throttle response and quicker turbo spooling.... Very impressed. Thanks riffraff u will be seeing alot more of my buisness and from friends of mine up here in canada!

Really like this filter kit . Well over twice the intake area. Quality materials. Would like to see it just a touch smaller to allow room for a box to protect it, but I know the cloth cover helps that also. Overall, Great Product.

I love the filter. U can really here the turbo whistle now.

Great product really love the looks and performance and can't beat the price:)