lincolnlocker
Well-known member
I had the 6637 for about 3000 miles on my truck and just swapped to the afe pro7r filter and there is a world of difference. Definitely worth the extra money if someone is doing a diy intake. Again this is from a 6637 to afe bhaf not the o.p.'s filter.
forgot to ask this, but is that the afe big boost filter you are talking about?
live life full throttle