Hi there,
It will take about 2 hours to install, however, I do not recommend this air intake system.
Benefits to this system are only at higher vehicle speeds, and will not compliment the drivability of your engine.
Being you have an 03, I would not bother with cold air induction, as it will not assist you enough to make a difference.
Also, I have had the foam filter element split open on more than one occasion.
I would stay stock on this, honestly.
Allthebest, c4c5
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