Nissan 370Z Forum - View Single Post - Berk hfc installed air surging or turbine sound?

FairladyZ · 12-20-2012, 10:13 AM

So I recently installed this and it is mated to an hks hi power exhaust.

The sound I hear comes on around 4000-5000 rpm when the car is rolling.

Around the center console you can hear the high flow cats either making a surge of air almost turbo sounding. It's kinda hard to explain it but it involves air moving as far as I can tell. Revving it standing still will not replicate this.

Is this from the increased flow?

From what I know there is nothing else wrong. Doesn't sound like an exhaust leak from the outside or anything.

My only other guess would be metal vibrating. Have any of you ever heard this after a hfc install?

http://youtu.be/gCk_qJCFB1w

The video of the sound

Listen for the high pitch ringing whistle like sound

12-20-2012, 10:13 AM	#1 (permalink)
FairladyZ Track Member Join Date: Jan 2009 Location: Los Angeles Posts: 850 Drives: 2012 370Z TRNG SPRT Rep Power: 17	Berk hfc installed air surging or turbine sound? So I recently installed this and it is mated to an hks hi power exhaust. The sound I hear comes on around 4000-5000 rpm when the car is rolling. Around the center console you can hear the high flow cats either making a surge of air almost turbo sounding. It's kinda hard to explain it but it involves air moving as far as I can tell. Revving it standing still will not replicate this. Is this from the increased flow? From what I know there is nothing else wrong. Doesn't sound like an exhaust leak from the outside or anything. My only other guess would be metal vibrating. Have any of you ever heard this after a hfc install? http://youtu.be/gCk_qJCFB1w The video of the sound Listen for the high pitch ringing whistle like sound Last edited by FairladyZ; 12-27-2012 at 09:56 AM.