EffSport

I installed the f-sport CAI on my 2016 IS350. I know that the cabin noise is a little quieter than stock. My question is, it sounds like I hear the engine a lot more at high acceleration. The sound is almost similar to a whizzing or humming...I don't think there's an air leak.

Is this a normal sound? Has anyone else had this issue?

My IS is stock aside from the f-sport intake.

leo877

If you swapped to F-sport intake, you wont hear it below 4k rpm. Skip to 0:55 for the intake sound

EffSport

My issue that it sounds (from inside the car) like there's an air leak.

Has anyone had this issue and had it corrected?

faisal11ir

Actually the stock intake has a sound generator so it sounds much better than the f-sport intake, you can connect the stock pipe to the f-sport box like I did.