|
displaying posts 1 to 25 of 41
Pages (2): [1] 2
| Author | Subject: High boost exhaust systems |
 pugheaven
Seasoned Pro  Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #1
What exhaust systems are people using with the high boost set up?Reason I ask is one of mine has a magnex decat and powerflow system,the centre box baffles are shot! The other has magnex decat and system, the rear box baffles are shot! Can any "off the shelf" systems cope with high boost?? |
 Posted 9th May 2013 at 19:47
|
|
|
eliotrw
Seasoned Pro  Location: Southwark Registered: 18 Jul 2010 Posts: 4,864 Status: Offline |
Post #2
I would get one made  Seems like the best option imo as all the off the shelf systems are compromised in some way to me.________________________________________ Ex- Phase 3 China GTi-6 T-Reg |
|
Posted 9th May 2013 at 19:57
|
|
stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #3
Mine comprises of a Devil Decat, straight through centre section and 4" Magnex backbox. The decat managed to muller the centre box, and the straight through centre section has managed to muller the rear box. I'm not bothered though because it's now solely for road use only and at 131dB, it's fine.________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone  |
|
Posted 9th May 2013 at 20:04
|
|
|
pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #4
It doesn't bother me on acceleration just when you let of it sounds s**t, granted at 131db I doubt you can hear much at all!I will get a custom one made for the Dimma but what do I need to do to illuminate the baffle issue (without totally removing them) |
|
Posted 9th May 2013 at 20:11
|
|
|
superchargedblack1997gti6
Seasoned Pro  Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #5
Straight through pipe all the way Ollie manifold to the back would sound epic but you may be mistaken for a Jet  ________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
|
Posted 9th May 2013 at 20:15
|
|
|
ash
Six Addict  Location: Chelmsford Registered: 25 Mar 2003 Posts: 7,520 Status: Offline |
Post #6
I think mine made 408bhp with a slightly modified 2.5" Blueflame and then 410bhp with a modified 3" Cosworth system. The Blueflame is available for £200 collected. |
|
Posted 9th May 2013 at 20:28
|
|
|
ash
Six Addict Location: Chelmsford Registered: 25 Mar 2003 Posts: 7,520 Status: Offline |
Post #7
It sounded like a Harrier Jump Jet with the Blueflame and a bit deeper but forgettable with the Cosworth one. |
|
Posted 9th May 2013 at 20:32
|
|
|
pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #8
I do already lol the powerflow sounded like a jet whilst the magnex sounds like thunder, I can imagine yours will sound like the end of the world!Plenty of cars that have more power as standard and don't have baffle failure, Im just worried that ill get one made and the same thing will happen 6 months later |
|
Posted 9th May 2013 at 20:34
|
|
|
pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #9
I was thinking about a 3 inch system but was unsure if it would effect the bhp or torque, obviously I would need to get it remapped after?? |
|
Posted 9th May 2013 at 20:37
|
|
|
superchargedblack1997gti6
Seasoned Pro Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #10
Ollie I spoke to Rich about this and he recommended not to go over 2.75 inch due to the loss of back pressure a 3 inch system would give. was tempted for custom to go say 2.75 down pipe then 2.5 for the rest of the system. ________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
|
Posted 9th May 2013 at 20:46
|
|
|
pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #11
I was thinking the opposite and using the 2.5 magnex decat to a 2.75 custom system so hopefully the back pressure to the head will not be effected much but hopefully the decrease in pressure after the decat will be abit more gentle on the baffles.I'm probably talking out my arse?!? |
|
Posted 9th May 2013 at 21:00
|
|
|
superchargedblack1997gti6
Seasoned Pro Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #12
Not sure mate but its interesting that Ash saw a bhp rise when he went bigger diameter pipe makes me wonder wether its worth a 2.75 decat going to a 3 inch system?  ________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
|
Posted 9th May 2013 at 21:06
|
|
|
Chris28190
Senior User  Location: . Registered: 15 Apr 2012 Posts: 736 Status: Offline |
Post #13
stan_306gti6 wrote: it's now solely for road use only and at 131dB, it's fine. That made me laugh  ________________________________________ Cherry Rallye '99 - Sold |
|
Posted 9th May 2013 at 21:09
|
|
|
pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #14
Worth looking into at least. Mine won't be ready for an exhaust for some time so plenty of time to research and speak to rich, Wayne and the exhaust place |
|
Posted 9th May 2013 at 21:13
|
|
|
superchargedblack1997gti6
Seasoned Pro Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #15
Ash do you run a non standard manifold? ________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
|
Posted 9th May 2013 at 21:15
|
|
|
ash
Six Addict Location: Chelmsford Registered: 25 Mar 2003 Posts: 7,520 Status: Offline |
Post #16
Group A manifold FWIW. If you have the money I'd recommend the Cosworth set up. With a supercharger you need the boxes close to the end of the system because of the extreme heat. Mine is 3" straight through until two large silencers sideways behind the rear beam. About 97dB at 4500rpm. |
|
Posted 9th May 2013 at 21:50
|
|
|
pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #17
How much are we talking roughly for a cosworth set up? |
|
Posted 9th May 2013 at 22:00
|
|
|
superchargedblack1997gti6
Seasoned Pro Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #18
Ash any pics? thanks ________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
|
Posted 10th May 2013 at 09:50
|
|
|
Takedown
Senior User  Location: Holland Registered: 18 Oct 2012 Posts: 845 Status: Offline |
Post #19
ive got 3" straighttrough, with a Simons 3" "turbo" backbox with custom titanium 100mm tip   dont know yet how this will sound...  |
|
Posted 28th May 2013 at 14:50
|
|
|
superchargedblack1997gti6
Seasoned Pro Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #20
Much quieter than ours! With the supercharger you don't have a turbo silencing the valve/engine noise before the down pipe ________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
|
Posted 28th May 2013 at 15:23
|
|
|
russbez
Seasoned Pro  Location: Inverness-Shire Registered: 19 Dec 2005 Posts: 7,459 Status: Offline |
Post #21
running a scorpion system for a while now, havent had any issues*touches wood* its fairly loud at high revs anyone try using the decibel meter app?? wonder if i could test mine ________________________________________ TEAM HIGH BOOST SUPERCHARGED RALLYEMy Rallye project thread |
|
Posted 28th May 2013 at 15:34
|
|
|
chrisd306
Seasoned Pro  Location: Perth Scotland Registered: 26 Nov 2005 Posts: 10,061 Status: Offline |
Post #22
I run full powerflow from decat back or a mix match scropion centre and an ashley back box i think not 100% either are to loud although get on knockhill easy enough but think id struggle at any other tracks.________________________________________ In my garage just now2003 BMW M3 & 2009 L200 Raging Bull & Audi Q5 S Line AX stock rod & Saxo Stock rod Sold the bike an charged rallye an bought a caravan, midlife crisis or what! |
|
Posted 28th May 2013 at 15:59
|
|
|
superchargedblack1997gti6
Seasoned Pro Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #23
I plan on putting two large silencer boxes under the bootfloor. Don't want to be stopped going on track.________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
|
Posted 28th May 2013 at 18:34
|
|
|
Takedown
Senior User Location: Holland Registered: 18 Oct 2012 Posts: 845 Status: Offline |
Post #24
superchargedblack1997gti6 wrote: Much quieter than ours! With the supercharger you don't have a turbo silencing the valve/engine noise before the down pipe Uhmm dont think so 1.4 bar on a GT30 with screamerpipe wont be quiter |
|
Posted 28th May 2013 at 21:59
|
|
|
armzsc6
Seasoned Pro  Location: Crowborough Registered: 22 Mar 2008 Posts: 3,445 Status: Offline |
Post #25
As I've said before mine is SILLY loud but sounds the nuts! As you will hear at pugfest. I have a 2.75" decat down to 2.5" power flow system which has two small boxes that appear to do nothing at all other than change the note slightly but they cant be called "silencers". Been using a couple of GO PRO camera systems with mates lately and all of them have reasonably loud exhausts on turbo and NA cars yet when mine goes past one of the cameras it's much much MUCH louder than there's on full chat. Also during tunnel runs if I'm booting it then no one else either end of the tunnel can hear their own car lol ________________________________________ Black power baby! SUUUUUPERCHARGED Seat Leon FR TDI 190BHP 300lbft daily gti-6 killer :p 12x 306's owned so far Cambelts, clutches, service work carried out on All makes and models, Peugeot Citroen / mitsubishi specialist. Pug planet / Citroen Lexia diagnostics / code reads available. |
|
Posted 28th May 2013 at 22:29
|
|
Pages (2): [1] 2
The Peugeot GTi-6 & Rallye Owners Club - ©2024 all rights reserved.
Please Note: The views and opinions found herein are those of individuals, and not of The Peugeot 306 GTi-6 & Rallye Owners Club or any individuals involved.
No responsibility is taken or assumed for any comments or statements made on, or in relation to, this website. Please see our updated privacy policy.