The stock can on my pred is so restrictive and it's annoying. damned spark arrestor.

anyways i won't have my new system for a while so i was wondering if it's safe to pop out that crap in the end.. or if it's harmful like on most quads? On my 400EX people said I'd lose needed back pressure and would burn my valves.

i don't want to do that so I'm asking you people.