Originally Posted by DesertFox

I can't speak for an xF-specific install, but this is what I've seen before.

Typically, you'll need to drill a couple holes for the jets, but it's usually easy to plug them or replace one or two plastic pieces to get it back to the stock look.

At a 75 shot, expect a bottle to last for maybe 15-20 quarter-mile runs? I'm foggy on this number, so I'm sure a few others could chime in.