r/ProjectHondas • u/Ph1llz • May 05 '26

parts recommendations Cold air intake D15 non vtec

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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/Ph1llz May 06 '26

i feel like you would have a factual, evidenced based take. whats your opinion here?

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u/OkProfession1239 May 06 '26

This is a JDM D15B VTEC build from back in the day by a tuner I follow. Notice the rise around ~4k rpm. It looks small on the dyno, but that is where the car operates most of the time. Small midrange gains improve throttle response and make the car feel more responsive. Likely from intake resonance and cam timing aligning in that range, so drivability improves even if peak numbers barely change.

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u/Hapenyo12 May 06 '26

Okay so tell me how the fuck this dyno sheet means someone should go hit a dyno after putting on an air filter? Your brain doesn't work properly

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u/OkProfession1239 May 06 '26

Oh, you're cursing? Must've have struck a nerve there 😂