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      11-04-2010, 01:09 AM   #1
Pharaoh2716
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Exhaust Pop and Gargle?

I recently was driving my 2011 335i coupe in steptronic mode. I noticed that in first gear, if I barely feathered the pedal and revved the car to about 2000 rpm then let off the exhaust seemed to produce a gargling noise. I stopped and revved the car and heard pops when the rpms went back down. I was wondering if this is normal. I have uploaded a video to help better describe, what I am talking about.

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      11-04-2010, 01:11 AM   #2
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yup..completely fine..mine does that too..some people love it some people hate it
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      11-04-2010, 01:12 AM   #3
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Perfectly normal. Except mine pops a lot louder with my Vanguard
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      11-04-2010, 01:20 AM   #4
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I have exhaust and an intake...
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      11-04-2010, 01:45 AM   #5
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I actually really like it!
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      11-04-2010, 02:00 AM   #6
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thats normal but anyone knows why theres pop sound? is this backfire?
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      11-04-2010, 02:02 AM   #7
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+1 id like more info too
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      11-04-2010, 07:52 AM   #8
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Originally Posted by e92K335i View Post
Perfectly normal. Except mine pops a lot louder with my Vanguard
+1 on the Vanguard...add CL DP's and you're set
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      11-04-2010, 08:06 AM   #9
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You need to put an aftermarket exhaust system on to get even more pops and gargles!

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      11-04-2010, 08:07 AM   #10
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Turbo charged car..
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      11-04-2010, 08:36 AM   #11
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That's my favorite part of my performance exhaust!
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      11-04-2010, 08:51 AM   #12
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The burble & gurgle sounds FANTASTIC with my AE exhaust and with an MT you have lots of control over it. I don't think I've come across anyone who doesn't enjoy that sound...
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      11-04-2010, 08:53 AM   #13
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gargle I floss my exhaust also
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      11-04-2010, 09:00 AM   #14
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Quote:
Originally Posted by DASHOCKER View Post
Turbo charged car..
Umm.... Happens on NA cars too, on the overrun. My E36 M3 did it a whole bunch with the help of a much less restrictive exhaust.
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      11-04-2010, 09:04 AM   #15
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its normal
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      11-04-2010, 09:19 AM   #16
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Quote:
Originally Posted by christopherchenm View Post
thats normal but anyone knows why theres pop sound? is this backfire?
Someone correct me if im wrong, but I believe its extra fuel that was not ignited being dumped into the exhaust and igniting; causing the popping sound. Which sounds bad ass imo.
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      11-04-2010, 09:19 AM   #17
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You need to listen to a 04-08ish Yamaha R1 with exhaust coming down the rpm range in gear around 5k rpm. I love the pops it makes.
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      11-04-2010, 10:45 AM   #18
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The best example of this is a Harley Davidson with 1 & 3/4" straight pipes...
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      11-04-2010, 12:05 PM   #19
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One of my favorite things about this car!
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      11-04-2010, 12:16 PM   #20
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We pay good money for that pop and gargle! I'm in the Love it camp.
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      11-04-2010, 12:34 PM   #21
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Quote:
Originally Posted by PiZauL View Post
Someone correct me if im wrong, but I believe its extra fuel that was not ignited being dumped into the exhaust and igniting; causing the popping sound. Which sounds bad ass imo.
Its the air getting trapped in the exhaust pipe.
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      11-04-2010, 12:56 PM   #22
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I love the Burble/Gargle! Revving in the morning gives me the warm and fuzzy's!
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