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I'm not sure about Canada, but in the US, a non-OEM part can't void your warranty unless it is directly related to the warranty claim.
As an example, if you have a cold air intake and suck in water, destroying your engine, the warranty would be void for replacing the engine.
But if you have a cold air intake, and your rear hatch won't open, then the warranty is valid, because the two things are not at all related.
Not sure about Canada. But a search would probably find some info pretty quickly...