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Old 09-20-2015, 05:49 PM   #1
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An I asking too much?

As I plan projects for my car's next hibernation, one wish keeps coming to mind. I want that burble sound from my exhaust upon deceleration. I don't want to buy a new exhaust system, encounter any CEL or cause any drone. Does this seem realistic?

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Old 09-20-2015, 06:05 PM   #2
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As I plan projects for my car's next hibernation, one wish keeps coming to mind. I want that burble sound from my exhaust upon deceleration. I don't want to buy a new exhaust system, encounter any CEL or cause any drone. Does this seem realistic?
top speed secondary cat delete / muffler will do that for you i get lots of gurgle lots of head turns and lots of compliments
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Old 09-20-2015, 08:39 PM   #3
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Does this seem realistic?
No.

With that being said, Fintro proposed a reasonably affordable solution that doesn't have much drone but does require changing the exhaust system. Be aware that the exhaust will also be MUCH louder than stock - but it does sound very bad ass.
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Old 09-20-2015, 08:55 PM   #4
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Above is all true. I have Circuit Werks / Beluga, but same deal.
I got quite a bit more decel burble when I went to a 75mm TB and 997 plenum T, but exhaust was already in place, so I doubt it would have the same effect with stock exhaust.
Car is a 2.7 5-speed.
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Old 09-20-2015, 09:23 PM   #5
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Can anyone point me to a video with sound of 'drone'?

I don't know exactly what that sound is, and it sounds like I wouldn't want that sound if I heard that sound.
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Old 09-20-2015, 09:25 PM   #6
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Replace all cats with test pipes and run some race gas to richen the car up.
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Old 09-20-2015, 09:59 PM   #7
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Can anyone point me to a video with sound of 'drone'?

I don't know exactly what that sound is, and it sounds like I wouldn't want that sound if I heard that sound.
Not sure "drone" can be captured in a recording. Part of it is a feeling/vibration you get from the sound in in ears. It's rather unpleasant.
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Old 09-21-2015, 04:35 AM   #8
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top speed secondary cat delete / muffler will do that for you i get lots of gurgle lots of head turns and lots of compliments
Sounds like what I'm looking for. No drone? What do you do about the O2 sensors left hanging?
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Old 09-21-2015, 04:40 AM   #9
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No.

With that being said, Fintro proposed a reasonably affordable solution that doesn't have much drone but does require changing the exhaust system. Be aware that the exhaust will also be MUCH louder than stock - but it does sound very bad ass.
My mistake, I wasn't clear enough. I meant that I don't want to change out the entire exhaust, headers, etc. but I'll give Fintros recommendation a try unless someone gives me a reason not to.
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Old 09-21-2015, 07:11 AM   #10
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Sounds like what I'm looking for. No drone? What do you do about the O2 sensors left hanging?
If your 986 is a 2000-2004 all the O2 sensors are up in the exhaust manifold with the integrated cats. The 2nd cat is not monitored by the ODBII system and has no O2 sensors. I have the 2nd cat delete on my 2000 and it did nicely improve the sounds and there is some of the burbling like you describe. It is a little louder too but not extreme. I like it!

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Old 10-10-2015, 08:59 PM   #11
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Haven't located any Top speed test pipes. Circuit Werks just as good?
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Old 10-10-2015, 09:09 PM   #12
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Sounds like what I'm looking for. No drone? What do you do about the O2 sensors left hanging?
nope don't have to touch them, the drone can be annoying if you drive at low rpm's I drive at 3 - 4k rpms haven't had any drone
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Old 10-10-2015, 09:20 PM   #14
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that last video skip to near the end to hear a 2015 gt3 fly by at about 200 km/h
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Old 10-11-2015, 01:58 AM   #15
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Haven't located any Top speed test pipes. Circuit Werks just as good?
As far as I can tell. They are just pipes with bungs, just screwed the supplied plugs in with some thread locker, I believe you have to do the same with the Top Speed pipes (most are made to work on all 2.5/2.7/3.2, and 2.5's have the O2 sensors here).
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Old 10-11-2015, 07:30 AM   #16
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Can anyone point me to a video with sound of 'drone'?

I don't know exactly what that sound is, and it sounds like I wouldn't want that sound if I heard that sound.
If you have a truck with four doors, roll down the rear windows partially and drive. You will get a horrible sound/vibration that is really hard to deal with. I can easily execute the drone sound in my xterra doing this.
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Old 10-11-2015, 11:08 PM   #17
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I guess they are just pipe joints with bungs, just attached the provided connects in with some line locker, I believe you have to do the same with the Top Rate pipes

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