High Air Flow Filter = Less Exhaust Gurgle???

Bescacho · 03-28-2013, 10:57 PM

I have just installed an AFE drop-in air filter and now my Performance Exhaust has next to no gurgle sound!

Does anyone has similar experience?

I would rather sacrifice the higher airflow to get my gurgle back (put back the stock filter)!

Is the higher airflow of the intake creating less pressure differential with the exhaust causing less vacuum in my PE leading to less gurgle?

FYI, my car has a N52 engine.

Thanks in advance.

idrift4wd · 03-28-2013, 11:06 PM

Im pretty sure sure your air-filter choice has nothing to do with your exhaust gurgle.

try putting your stock air filter back in and see if it comes back. then tell your friend to switch it back without you knowing. It may be all in your head.

Bescacho · 03-30-2013, 08:20 AM

I switched back and forth yesterday between the stock filter and AFE filter... and the stock filter definitely produced a lot more exhaust POP...

What I want is the exhaust to pop more... is it normal that high air flow filter produces less pop?

I might have mislabeled this thread... I thought exhaust gargle = pop

Route 16 · 03-30-2013, 08:40 AM

I get gurgle, pops with stock flat filter and aftermarket cone filters on D mode not frequently. DS mode brings it out more frequently.

03-28-2013, 10:57 PM	#1
Bescacho Private First Class 13 Rep 143 Posts Drives: E92 X-Drive Join Date: Apr 2011 Location: Canada iTrader: (0)	High Air Flow Filter = Less Exhaust Gurgle??? I have just installed an AFE drop-in air filter and now my Performance Exhaust has next to no gurgle sound! Does anyone has similar experience? I would rather sacrifice the higher airflow to get my gurgle back (put back the stock filter)! Is the higher airflow of the intake creating less pressure differential with the exhaust causing less vacuum in my PE leading to less gurgle? FYI, my car has a N52 engine. Thanks in advance.
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03-28-2013, 11:06 PM	#2
idrift4wd Brigadier General 149 Rep 3,552 Posts Drives: Three Hundred and Thirty Five Join Date: Jul 2010 Location: Yonkers NY iTrader: (0) Garage List 2007 BMW [7.00]	Im pretty sure sure your air-filter choice has nothing to do with your exhaust gurgle. try putting your stock air filter back in and see if it comes back. then tell your friend to switch it back without you knowing. It may be all in your head.
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03-30-2013, 08:20 AM	#3
Bescacho Private First Class 13 Rep 143 Posts Drives: E92 X-Drive Join Date: Apr 2011 Location: Canada iTrader: (0)	I switched back and forth yesterday between the stock filter and AFE filter... and the stock filter definitely produced a lot more exhaust POP... What I want is the exhaust to pop more... is it normal that high air flow filter produces less pop? I might have mislabeled this thread... I thought exhaust gargle = pop
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03-30-2013, 08:40 AM	#4
Route 16 I got lei'd 844 Rep 7,593 Posts Drives: '10 E90 M3 Join Date: Sep 2011 Location: Dark Side of the Moon iTrader: (62)	I get gurgle, pops with stock flat filter and aftermarket cone filters on D mode not frequently. DS mode brings it out more frequently.
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