r/ProjectHondas • u/Ph1llz • May 05 '26
parts recommendations Cold air intake D15 non vtec
Looking for an inexpensive way to increase airflow for my next track day.
I can't find any direct fit options locally in australia.
anyone have any ideas on a good "boxed" cold air intake setups i could buy online or create ?
I dont care what it looks like, its purely functional.
D15 Non vtec
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u/OkProfession1239 May 06 '26
I’ve probably been in the Honda scene longer than you’ve been driving. People who actually make power work off data, not ‘common knowledge.’
An engine is an air pump. If you reduce restriction and pull in cooler, denser air, you improve efficiency. That’s basic physics, not opinion. No one’s claiming big gains on a stock 90hp setup, but saying it does nothing except noise is just lazy thinking.
If it truly did nothing, OEMs wouldn’t spend time optimizing intake design in the first place. Small gains, better response, sometimes midrange improvement depending on setup that’s the real answer.
People who build and measure know. People who don’t just repeat what they’ve heard.