The only problem I have with your "DIY Dual CAI" is that it's NOT a Cold Air Intake. By definition, it became a HAI (Hot Air Intake) when the filters were installed in the engine bay. Sorry, but that's a fact and not a judgement of your work.

If you ever revise your design, relocate the filters outside the engine bay and you'll be golden. Even in current form I'm sure it's a great bang-for-the-buck mod.

As for me, I bought my first NW CAI for $30 off of Craigslist.

By the way, the insults and profanity make you look ignorant.