09-20-2015, 04:49 PM
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#1
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Registered User
Join Date: Sep 2014
Location: Kuna, Idaho
Posts: 308
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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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09-20-2015, 05:05 PM
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#2
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Registered User
Join Date: Jun 2013
Location: Nanaimo, Vancouver Island, British Columbia, Canada
Posts: 900
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Quote:
Originally Posted by CHRISP357
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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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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09-20-2015, 07:39 PM
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#3
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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Quote:
Originally Posted by CHRISP357
Does this seem realistic?
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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.
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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09-20-2015, 07:55 PM
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#4
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Registered User
Join Date: Apr 2014
Location: DFW
Posts: 253
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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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09-20-2015, 08:23 PM
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#5
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I am my own mechanic....
Join Date: Feb 2013
Location: Salt Lake City, UT
Posts: 3,433
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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.
__________________
'04 Boxster S 50 Jahre 550 Spyder Anniversary Special Edition, 851 of 1953, 6-sp, IMS/RMS, GT Metallic silver, cocoa brown leather SOLD to member Broken Linkage.
'08 VW Touareg T-3 wife's car
'13 F150 Super Crew long bed 4x4 w/ Ego Boost
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09-20-2015, 08:25 PM
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#6
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Registered User
Join Date: Apr 2014
Location: Chicago
Posts: 329
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Replace all cats with test pipes and run some race gas to richen the car up.
__________________
'99 Porsche Boxster 986 - weekend car
'04 BMW 645ci e63 - daily driver
'98 BMW 528i e39 - dog carrier
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09-20-2015, 08:59 PM
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#7
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Quote:
Originally Posted by Timco
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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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.
__________________
03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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09-21-2015, 03:35 AM
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#8
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Registered User
Join Date: Sep 2014
Location: Kuna, Idaho
Posts: 308
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Quote:
Originally Posted by Fintro11
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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09-21-2015, 03:40 AM
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#9
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Registered User
Join Date: Sep 2014
Location: Kuna, Idaho
Posts: 308
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Quote:
Originally Posted by thstone
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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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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09-21-2015, 06:11 AM
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#10
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Registered User
Join Date: Dec 2012
Location: FL
Posts: 4,143
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Quote:
Originally Posted by CHRISP357
Sounds like what I'm looking for. No drone? What do you do about the O2 sensors left hanging?
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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!
Steve
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10-10-2015, 07:59 PM
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#11
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Registered User
Join Date: Sep 2014
Location: Kuna, Idaho
Posts: 308
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Haven't located any Top speed test pipes. Circuit Werks just as good?
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10-10-2015, 08:09 PM
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#12
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Registered User
Join Date: Jun 2013
Location: Nanaimo, Vancouver Island, British Columbia, Canada
Posts: 900
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Quote:
Originally Posted by CHRISP357
Sounds like what I'm looking for. No drone? What do you do about the O2 sensors left hanging?
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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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10-10-2015, 08:14 PM
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#13
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Registered User
Join Date: Jun 2013
Location: Nanaimo, Vancouver Island, British Columbia, Canada
Posts: 900
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10-10-2015, 08:20 PM
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#14
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Registered User
Join Date: Jun 2013
Location: Nanaimo, Vancouver Island, British Columbia, Canada
Posts: 900
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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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10-11-2015, 12:58 AM
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#15
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Registered User
Join Date: Apr 2014
Location: DFW
Posts: 253
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Quote:
Originally Posted by CHRISP357
Haven't located any Top speed test pipes. Circuit Werks just as good?
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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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10-11-2015, 06:30 AM
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#16
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Registered User
Join Date: Jul 2013
Location: Austin, TX
Posts: 175
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Quote:
Originally Posted by Timco
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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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.
__________________
2002 Boxster S Polar Silver Metallic, Hard Top
2016 4Runner TEP
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10-11-2015, 10:08 PM
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#17
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Registered User
Join Date: Oct 2015
Location: United States Of America, New York
Posts: 6
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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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Last edited by samandrewsone; 10-06-2016 at 10:16 PM.
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