I've got an '07 Train. I've pretty much decided on Hooker troublemaker darksides and a SERT, but I haven't completely decided on the A/F. Is one A/F any better than the others? Is K&N any better than SE or the Big Sucker or any others? I am going with no on this one, but I just wanted to check with those that are smarter than me on this issue. Thanks!

 

The K&N will have better flow than Stock HD filter, and will be plenty for the mods you listed, the advantage of the K&N is it's washable and re-use forever, well almost forever.

 

go for a big sucker they have the same style filter as the big sucker i fitted a big sucker to my 07softail with good results the ness kit fitted like a glove it has a cast backing plate with internal breathers and bolts up easy if u fit one of these u wont look back