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displaying posts 1 to 25 of 32
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| Author | Subject: Trackday exhaust silencing |
 blandy
Seasoned Pro  Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #1
Has anyone ran 3 silencer boxes to meet noise restrictions for track? I've got a tester from maplins to which my current exhaust reads from 102-106db at 3/4 revs but obviously with it being a track car I want to get it lower. I currently have a 4-2-1 manifold which is 2.5" as it joins the system so have the rest of the system also at 2.5 diameter with 2 silencers in. Would a 3rd silencer upset things? |
 Posted 3rd Jul 2013 at 19:46
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #2
I think spiky has added a bigger transverse box, but really at your power level a 2 box system should not have any issues at all keeping it down.What system is it? Possibly past its best if its used. ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Jul 2013 at 20:05
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #3
It's a few month old.... Powerflow system which is prob half of it but I needed a custom system as its one of miles race manifolds on there so comes back a long way so has to be custom. Hopefully they can put larger boxes in or a different box etc as going back there next week as its not quiet enough but just weighing up the options if they say that's the quietest boxes they do. From memory they are strait through perforated silencers so shouldn't be very restrictive I'm just pre empting the fact they may say that I already have there quietest boxes so thinking if so a 3rd box may be the best option but I'm thinking they should just need to change to a different box. |
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Posted 3rd Jul 2013 at 20:13
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #4
get one of miles's exhausts then  or an edwards motorsport. dont think I've ever heard a great powerflow system  ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Jul 2013 at 20:27
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rikky
🦔 Location: cheshire Registered: 28 Feb 2004 Posts: 26,795 Status: Offline |
Post #5
my powerflow catback on my gti6 sounded awesome when i took it off________________________________________ 306 rallye reproduction decals (full sets/individual decals) | 306 b-pillar textured vinyl weatherstrips306 slam panel esso stickers | 306 yellow / orange / pension fund red side door badges gti6 inlet manifold badges | 306 rear boot badges (p2/p3) winner of Extraction of toys from prams with outstanding vigour award 2009 [source: gti6 owners club] |
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Posted 3rd Jul 2013 at 20:28
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #6
 ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Jul 2013 at 20:36
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #7
Lol if I can't get it quieter ill have to change it as no point having a track car that can't get on track lol. If so ill have a word with miles but hoping I can get the one I've got as already spent out on it and just want to get it out on track now |
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Posted 3rd Jul 2013 at 20:37
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coskev
Seasoned Pro  Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #8
welshpug! wrote: get one of miles's exhausts then or an edwards motorsport. dont think I've ever heard a great powerflow system Have you heard a Torque Technique(Miles)exhaust?  They are very loud on part throttle and upto 4000rpm,then they go quieter  So could be ok for a track car that's at WOT and high revs a lot passing noise meters I suppose  ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 3rd Jul 2013 at 21:20
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #9
Similar to what I have now by sounds of it.. Flat out Its more manageable than lower down but at 3/4 revs on a static test is prob where its loudest I done a flat out drive by test and was alot lower but looking at booking a track day at mallory which is a 98db limit so I've no chance currently.. |
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Posted 3rd Jul 2013 at 21:25
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coskev
Seasoned Pro Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #10
My Blueflame is very quiet for a stainless system due to the huge backbox ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 3rd Jul 2013 at 22:04
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JWP EFi
Turbo Legend!  Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #11
have you got eddiebeanos old blueflame? i remember it being very quiet indeed.I have its matching decat pipe in my lockup if it's of any use to you |
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Posted 3rd Jul 2013 at 21:59
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #12
yep, I heard one on a 205 with a bodied gti6 engine, and it was much quieter than my Longlife which had no issues on a trackday.one of miles's btw, not a blueflame. ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Jul 2013 at 22:03
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coskev
Seasoned Pro Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #13
T99PUG wrote: have you got eddiebeanos old blueflame? i remember it being very quiet indeed. I have its matching decat pipe in my lockup if it's of any use to you Yeah that's the one Got a sports cat fitted thanks,welded into my Magnex de-cat pipe,can't be arsed changing over dp's for MOT,and it drives better with sports cat anyway! ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 3rd Jul 2013 at 22:06
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JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #14
i remember fitting that system to his china, couldn't believe how quiet it was. tell me more about your cat? i recently swapped my magnex for a powerflow, nice subtle tone but pipework is only 50mm, engine is alot more torquey under 4000 revs but higher up the magnex allowed it to pull harder. i would go for a 'flame but wasnt too keen on the tail pipe |
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Posted 3rd Jul 2013 at 22:13
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bigbadbowen
Seasoned Pro  Location: Winchester Registered: 21 Nov 2003 Posts: 13,753 Status: Offline |
Post #15
How much for the blueflame decat ? |
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Posted 3rd Jul 2013 at 22:51
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rallyeash
Seasoned Pro  Location: Devizes Registered: 11 Dec 2006 Posts: 4,424 Status: Offline |
Post #16
coskev wrote: welshpug! wrote: get one of miles's exhausts then or an edwards motorsport. dont think I've ever heard a great powerflow system Have you heard a Torque Technique(Miles)exhaust? They are very loud on part throttle and upto 4000rpm,then they go quieter So could be ok for a track car that's at WOT and high revs a lot passing noise meters I suppose I went to Torque technique to have mine made 2.5 system with 2 large silencers fitted in the standard positions. 90db at 4.5k on my tb'd, cam'd engine ________________________________________ 230 hp 2.1 16v XU 205 rallye on jenveys Project thread here309 3dr K20 Type R |
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Posted 3rd Jul 2013 at 23:19
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eliotrw
Seasoned Pro  Location: Southwark Registered: 18 Jul 2010 Posts: 4,864 Status: Offline |
Post #17
I "think" my exhaust is spot on now, Sounds similar in many ways to what Coskev is saying about a torque techniques system, but the sounds after 4k is just pure race car.Seriously sounds epic and makes driving the car "an occasion" now, sounds ridiculous but it really does. Bit of drone before then, hense why I say it sounds similar to what 'Kev is saying, Same tailpipe too. ________________________________________ Ex- Phase 3 China GTi-6 T-Reg |
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Posted 3rd Jul 2013 at 23:45
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #18
rallyeash wrote: coskev wrote: welshpug! wrote: get one of miles's exhausts then or an edwards motorsport. dont think I've ever heard a great powerflow system Have you heard a Torque Technique(Miles)exhaust? They are very loud on part throttle and upto 4000rpm,then they go quieter So could be ok for a track car that's at WOT and high revs a lot passing noise meters I suppose I went to Torque technique to have mine made 2.5 system with 2 large silencers fitted in the standard positions. 90db at 4.5k on my tb'd, cam'd engine thanks thats good to know that you have no issues with the bodies as well especially at coombe as im now looking at coombe as mallory park is now out of the question as already got other plans on same day |
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Posted 4th Jul 2013 at 13:37
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rallyeash
Seasoned Pro Location: Devizes Registered: 11 Dec 2006 Posts: 4,424 Status: Offline |
Post #19
Combe is 100 and Mallory 95db________________________________________ 230 hp 2.1 16v XU 205 rallye on jenveys Project thread here309 3dr K20 Type R |
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Posted 4th Jul 2013 at 21:40
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #20
Malory was 98 on the site I was booking on but either way I want to aim low as dnt want to pay £150+ for a day just to get flagged for noise, + the sound of the bodies is enough noise for me  |
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Posted 4th Jul 2013 at 21:43
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rallyeash
Seasoned Pro Location: Devizes Registered: 11 Dec 2006 Posts: 4,424 Status: Offline |
Post #21
ah ok, the Javelin day we did was 95 but i was 90 so all good.________________________________________ 230 hp 2.1 16v XU 205 rallye on jenveys Project thread here309 3dr K20 Type R |
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Posted 4th Jul 2013 at 21:45
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miles
Seasoned Pro  Location: Ringwood Registered: 28 Dec 2002 Posts: 3,433 Status: Offline |
Post #22
Mine's around 92db, but it's mild steel which is allot quieter than Stainless steel, Induction thankfully isn;t measured or I would be buggered ________________________________________ 306 Rallye Sptint/Race Car, 205 CTI 1.9 8v to name a fewRoad, Track and Race/Rally car preparation to your personal requirements, Full Workshop & Diagnostic Facilities New and Second parts, from Plugs to Turbo's We now also carry out Routine Servicing www.pugracing.com & FB Page, https://www.facebook.com/PugRacing Ebay; http://stores.ebay.co.uk/Pug-Racing-Shop 2012/2013/2014/2019 Class Winners at Gurston Down Speed Hillclimb & Joint overall, Class record too along the way, |
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Posted 4th Jul 2013 at 22:03
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #23
Is that reading with the manifold or just cat back? If I can't get it low enough I may be in touch |
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Posted 4th Jul 2013 at 22:07
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miles
Seasoned Pro Location: Ringwood Registered: 28 Dec 2002 Posts: 3,433 Status: Offline |
Post #24
On my own 306 so complete manifold and system, measured as per the blue book rules. Going from my Dads old std 306 with a cat back stainless one at 90 odd db's from memory you can see how loud they can be no matter how large the box's are________________________________________ 306 Rallye Sptint/Race Car, 205 CTI 1.9 8v to name a fewRoad, Track and Race/Rally car preparation to your personal requirements, Full Workshop & Diagnostic Facilities New and Second parts, from Plugs to Turbo's We now also carry out Routine Servicing www.pugracing.com & FB Page, https://www.facebook.com/PugRacing Ebay; http://stores.ebay.co.uk/Pug-Racing-Shop 2012/2013/2014/2019 Class Winners at Gurston Down Speed Hillclimb & Joint overall, Class record too along the way, |
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Posted 5th Jul 2013 at 22:04
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #25
Cool thanks for the info wish I'd of just got one of them in the first place now, oh well dependant on how I get on wed I could be in touch |
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Posted 5th Jul 2013 at 22:09
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