Has anyone installed a Stillen Gen 3 intake without removing the bumper? I'm just curious to know.

 

I remember reading someone did. All they had to do was remove the grill. The area to cut the holes for the intake plumbing was just a bit harder.

 

I've cleaned the filters w/o removing the bumper but to install I would highly suggest at least hanging the bumper. I never removed it, per se, but i just let it hang. You will not have any room to cut at all if you don't take it off at all

 

It's not a bug deal removing the bumper. Do it and save yourself the trouble.