Crown

Board: Porsche - 911 - 997 Language: English Region: Worldwide Share/Save/Bookmark Close

Forum - Thread

    30-Aug-2008 20:39:10

    adam s
    Junior
    adam s
    Loc: California
    Posts: 93, Gallery
    Registered on: 20-Dec-2004

    SPORT button & exhaust issue

    I was wondering if you guys have the same issue...
    When the sport button is engaged.. the exhaust valve sometimes still closes between 2k and 3k RPM, only to re-open above and below this... it's not always like this.. only about 70% of the time...
    I thought SPORT buttton leaves the vale open at all times.
    I thought there could be something wrong with the valve, but since there is one on each side... and since they both close and open at exactly the same time, I am ruling out a physical/mechanical issue with the valves themselves...
    Did anyone that this issue and how did you resolve it?

    30-Aug-2008 21:05:34

    ResB Offline
    Rennteam Pro
    ResB
    Loc: Yorkshire, where roads are twisty... , United Kingdom
    Posts: 2858, Gallery
    Registered on: 19-Jan-2006
    Reply to: adam s

    Re: SPORT button & exhaust issue

    I believe it is supposed to do that, i.e. switch itself off at lower speed/revs.

    30-Aug-2008 21:23:02

    mex99
    Pilot
    mex99
    Loc: UK
    Posts: 335, Gallery
    Registered on: 28-Feb-2008
    Reply to: ResB

    Re: SPORT button & exhaust issue

    That is my understanding too - below about 30mph it assumes you are on a residential street and switches down

    30-Aug-2008 22:42:18

    Carlos from SpainM
    Rennteam Moderator
    Carlos from Spain
    Loc: Spain. , Spain
    Posts: 21155, Gallery
    Registered on: 09-Feb-2003
    Reply to: mex99

    Re: SPORT button & exhaust issue

    Thats how its supposed to work, roughly between 45-80kmph, the the exhaust quiets down, and its only lous outside those speeds.

    The explanation I heard for this is that its at those speeds were the homologation noise tests are performed here in europe so in order to make it legal they make it quiet between those speeds

    The way to make it loud all the time is to unplug the orange connector that powers the vacum that open/close the resonnace valves in the mufflers.

    31-Aug-2008 06:59:14

    Minok
    Co-Pilot
    Minok
    Loc: Pacific Northwest
    Posts: 263, Gallery
    Registered on: 29-Jun-2008
    Reply to: Carlos from SpainM

    Re: SPORT button & exhaust issue

    45-80 kph is the speeds you would be driving in towns and cities most of the time in Germany, and probably whey they want to have those speeds be quieter. When slower, the engine is itself somewhat quieter, so its not annoying, and above 80 kph your usually on a highway or superhighway and, again, your not annoying people.

    31-Aug-2008 07:00:17

    adam s
    Junior
    adam s
    Loc: California
    Posts: 93, Gallery
    Registered on: 20-Dec-2004
    Reply to: Carlos from SpainM

    Re: SPORT button & exhaust issue

    hm.. I am looking for the solution on the gt3...

    31-Aug-2008 17:44:17

    current47
    Newbie
    current47
    Loc: NY
    Posts: 9, Gallery
    Registered on: 05-Nov-2006
    Reply to: adam s

    Re: SPORT button & exhaust issue

    if you have a PSE exhaust, check out this link>>>

    http://www.rennteam.com/showflat.php?Cat...true#Post296222
     
    Edit

    Forum

    1. All 

    Boards

     
    Board Subject Last post Rating Views Replies
    Porsche Sticky SUN'S LAST RUN TO WILSON, WY - 991 C2S CAB LIFE, END OF AN ERA (Part II) 14/05/24 03:43
    rhino     		802641 1804
    Porsche Sticky Welcome to Rennteam: Cars and Coffee... (photos) 07/04/24 11:48
    Boxster Coupe GTS     		448382 565
    Porsche Sticky OFFICIAL: Porsche 911 (992) GT3 RS - 2022 12/03/24 08:28
    DJM48     		265921 323
    Porsche Sticky The new Macan: the first all-electric SUV from Porsche 30/01/24 09:18
    RCA     		89923 45
    Porsche Sticky OFFICIAL: Taycan 2024 Facelift 15/03/24 13:23
    CGX car nut     		6395 50
    Porsche The moment I've been waiting for... 01/02/24 19:01
    Pilot
     
     
     
     
     
    		 885335 1364
    Porsche 992 GT3 23/07/23 19:01
    Grant     		832139 3868
    Porsche GT4RS 21/04/24 11:50
    mcdelaug     		399118 1454
    Porsche Welcome to the new Taycan Forum! 10/02/24 16:43
    nberry     		395420 1526
    Others Tesla 2 the new thread 13/12/23 14:48
    CGX car nut     		381950 2401
    Porsche Donor vehicle for Singer Vehicle Design 03/07/23 12:30
    Porker     		370659 797
    Porsche Red Nipples 991.2 GT3 Touring on tour 12/05/24 18:23
    blueflame     		293301 669
    Porsche Collected my 997 GTS today 19/10/23 19:06
    CGX car nut
     
     
     
     
     
    		 265122 812
    Lambo Huracán EVO STO 30/07/23 18:59
    mcdelaug     		243785 346
    Lotus Lotus Emira 25/06/23 14:53
    Enmanuel     		238461 101
    Others Corvette C8 16/10/23 15:24
    Enmanuel     		222104 488
    Others Gordon Murray - T.50 22/11/23 10:27
    mcdelaug     		172945 387
    Porsche Back to basics - 996 GT3 RS 11/06/23 17:13
    CGX car nut     		144823 144
    BMW M 2024 BMW M3 CS Official Now 29/12/23 09:04
    RCA     		120935 303
    Motor Sp. 2023 Formula One 19/12/23 05:38
    WhoopsyM     		111304 685
    Porsche 2022 992 Safari Model 07/03/24 16:22
    WhoopsyM     		85459 239
    AMG Mercedes-Benz W124 500E aka Porsche typ 2758 23/02/24 22:03
    blueflame     		75682 297
    Porsche 992 GT3 RS 03/03/24 19:22
    WhoopsyM     		54722 314
    Motor Sp. Porsche 963 13/05/24 15:18
    Grant     		26172 246
    Ferrari Ferrari 296 GTB (830PS, Hybrid V6) 21/01/24 16:29
    GT-Boy     		21633 103
    BMW M 2022 BMW M5 CS 08/04/24 13:43
    Ferdie     		20054 140
    AMG G63 sold out 15/09/23 19:38
    Nico997     		16996 120
    AMG [2022] Mercedes-AMG SL 23/04/24 13:24
    RCA     		14220 225
    Motor Sp. 24-Hour race Nürburgring 2018 25/05/23 22:42
    Grant     		11437 55
    Porsche Porsche Mission X Hypercar 03/12/23 08:52
    996FourEss     		11184 63
    123 items found, displaying 1 to 30.