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Author Subject: SC exhaust help
manthos

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Post #1
Hi guys as most of you know I now have a low boost 6 and it came with a magnex decat with full Jetex system. 2.5 bore. Don't get me wrong it Is lovely and quiet but I would like something with the odd pop and bang. I need something 2.5 bore and I do not want it to be droany or boomy. what do you recommend?

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Posted 9th May 2016 at 22:20
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mocinim

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Post #2
Scorpion exhaust

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Posted 9th May 2016 at 22:42
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3rd time lucky

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Post #3
I think it will need to over-fuel a bit to get it to pop n bang. I think my car needs to too but im not buying aftermarket ecu then mapping it for pop n bang. Too much money.

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Posted 9th May 2016 at 22:47
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manthos

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Post #4
Both my previous standard 6's would pop and bang occasionally I had a custom exhaust I made for them. magnex decat powerful ow centre section and longlife back box. love the sound of that exhaust it's amazing it's such a shame I cannot fit it because it is not a big enough bore

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Team SUPERCHARGED

Ninja I LIVE FOR THE 306 Ninja

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Posted 9th May 2016 at 23:01
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RetroPug

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Location: Leicestershire

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Post #5
Both powerflow and longlife could make you a centre and a rear with a 2.5" bore I'm sure?

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Posted 9th May 2016 at 23:29
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manthos

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Post #6
Yes they could that is correct. just wondered the results of people here with LB knew what was not boomy but had a bit more character than the jetex

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Team SUPERCHARGED

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Posted 10th May 2016 at 08:15
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superchargedblack1997gti6

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Location: guildford

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Post #7
I run a 3 inch manifold back does pop and bang on the overrun and when blipping the throttle changing down after hard acceleration. Mine is a mani flow system

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Super high boost Completed, destroyer of gearboxes and 160mph club
Posted 10th May 2016 at 09:14
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manthos

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Post #8
You have a super high boost right? 3" would be to big for a low boost no?? is it droany and horrible on the motorway?

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Posted 10th May 2016 at 10:17
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superchargedblack1997gti6

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Post #9
Super high boost but it's far less restrictive than the previous 2.5 inch and no not boomy on motorway mate

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Posted 10th May 2016 at 10:33
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manthos

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Post #10
cool thanks for me though as I am low boost do I need to stick with 2.5 inch or go to 3

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Team SUPERCHARGED

Ninja I LIVE FOR THE 306 Ninja

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Posted 10th May 2016 at 10:49
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superchargedblack1997gti6

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Post #11
I'd speak to rich w but I'd say you'd be fine with either to be fair.

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Super high boost Completed, destroyer of gearboxes and 160mph club
Posted 10th May 2016 at 10:53
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manthos

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Post #12
spoke to rich as always he is incredibly helpful you have to love him. He has told me 3" is only really necessary for super high boost so would be best to stick with 2.5". I think I should however cut off the joiner bracket on the bottom of the magnex decat as it steps down to 2.25"

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Team SUPERCHARGED

Ninja I LIVE FOR THE 306 Ninja

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Posted 10th May 2016 at 11:51
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RetroPug

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Post #13
mocinim wrote:
Scorpion exhaust


These have a 2.25" bore for a 306 mate so not really suitable for a charged car.

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61k miles Ph.1 Diablo '6 Project Thread
Posted 10th May 2016 at 12:03
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superchargedblack1997gti6

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Post #14
Speak to Ash Hargreaves as I believe he has a blue flame exhaust with the slight restriction removed making it 2.5 inch all the way through

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Super high boost Completed, destroyer of gearboxes and 160mph club
Posted 10th May 2016 at 12:30
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roland rat

Yeeeah Rat fans!

Location: Swansea

Registered: 29 Nov 2006

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Post #15
manthos wrote:
spoke to rich as always he is incredibly helpful you have to love him. He has told me 3" is only really necessary for super high boost so would be best to stick with 2.5". I think I should however cut off the joiner bracket on the bottom of the magnex decat as it steps down to 2.25"


I wouldnt as it makes the decat easier to locate/fit and i doubt the 15/20cm of pipe is going to make a difference Laugh
Posted 10th May 2016 at 13:17
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armzsc6

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Post #16
You can still make decent power with 2 1/4" as they still require back pressure unlike a turbo setup. 2.5" may give slightly better flow but it's only really needed for high boost.

Don't get a magnex if you don't want boom at motorway speed lol. Mine is fully custom 2.5" manifold back center exit.

If you went to a 3" you will loose mid range torque due to not enough back pressure I would imagine. Rich has advised a few people before against 3" for that reason.

When I bought my exhaust offa Mabz it had no center box so nothing from the head all the way to the back box and mid range was awful. It felt slower than it did with the 2.25" powerflow setup I had on before. I added a stainless Jetex/ Simons center box and it made it a much better car to drive. Also got it quiet enough for track use and less boomy in the car.

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Black power baby! SUUUUUPERCHARGED Superman
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12x 306's owned so far

Cambelts, clutches, service work carried out on All makes and models, Peugeot Citroen / mitsubishi specialist.
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Posted 10th May 2016 at 13:48
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manthos

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Post #17
Cheers mate. Yes magnex is super boomy rankness, is Ash Hargreaves just Ash on here? Does anyone know if the Jetex backbox is a straight through diagonal pipe or chambered?

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Team SUPERCHARGED

Ninja I LIVE FOR THE 306 Ninja

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Posted 10th May 2016 at 13:42
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armzsc6

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Post #18
manthos wrote:
Cheers mate. Yes magnex is super boomy rankness, is Ash Hargreaves just Ash on here? Does anyone know if the Jetex backbox is a straight through diagonal pipe or chambered?


Pass without cutting it open but it's offset and I'm told their very quiet so I would presume chambered?

________________________________________

Black power baby! SUUUUUPERCHARGED Superman
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 10th May 2016 at 13:46
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manthos

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Post #19
That's what I was thinking. Rich suggests poking some wire through it and should be able to find out that way but how quiet it is I would guess chambered too

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Team SUPERCHARGED

Ninja I LIVE FOR THE 306 Ninja

Old Project thread

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Posted 10th May 2016 at 13:50
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armzsc6

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Post #20
That or take it off and shine a torch through it. If you can't see light it's chambered

________________________________________

Black power baby! SUUUUUPERCHARGED Superman
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 10th May 2016 at 14:25
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marco gti6

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Post #21
I use a Jetex system as well on my lowboost 6. When i got my Car charged however i needed to have a cat installed to pass the MOT. So we chopped an original PugCat and we welded a universal 2,5" ceramic cat in place. To join it to the center section of the jetex we also Cut the 2.25" section on the center box to make it 2.5" all the way through. Now I am not happy with the fitment of the system as it is a little off after all the cutting and patching we did. If I was to do it again however I would not have chopped the center box as i can't imagine it being restrictive by that short section which is a little more narrow. I called jetex to get just the center silencer from the kit to use with a decat until they quoted me 180€ without postage which is quite steep if you ask me.

I my opinion I would leave your sistem as is mate they sound perfect in my opinion even with a cat like in my case and once up to temperature mine pops on downshifting.
Posted 12th May 2016 at 08:32
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armzsc6

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Post #22
marco gti6 wrote:
I use a Jetex system as well on my lowboost 6. When i got my Car charged however i needed to have a cat installed to pass the MOT. So we chopped an original PugCat and we welded a universal 2,5" ceramic cat in place. To join it to the center section of the jetex we also Cut the 2.25" section on the center box to make it 2.5" all the way through. Now I am not happy with the fitment of the system as it is a little off after all the cutting and patching we did. If I was to do it again however I would not have chopped the center box as i can't imagine it being restrictive by that short section which is a little more narrow. I called jetex to get just the center silencer from the kit to use with a decat until they quoted me 180€ without postage which is quite steep if you ask me.

I my opinion I would leave your sistem as is mate they sound perfect in my opinion even with a cat like in my case and once up to temperature mine pops on downshifting.


Type Jetex silencer into ebay and loads of Simons or Jetex boxes come up for around £80

________________________________________

Black power baby! SUUUUUPERCHARGED Superman
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 12th May 2016 at 19:39
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manthos

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Location: Norwich

Registered: 29 Apr 2009

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Post #23
marco gti6 wrote:
I use a Jetex system as well on my lowboost 6. When i got my Car charged however i needed to have a cat installed to pass the MOT. So we chopped an original PugCat and we welded a universal 2,5" ceramic cat in place. To join it to the center section of the jetex we also Cut the 2.25" section on the center box to make it 2.5" all the way through. Now I am not happy with the fitment of the system as it is a little off after all the cutting and patching we did. If I was to do it again however I would not have chopped the center box as i can't imagine it being restrictive by that short section which is a little more narrow. I called jetex to get just the center silencer from the kit to use with a decat until they quoted me 180€ without postage which is quite steep if you ask me.

I my opinion I would leave your sistem as is mate they sound perfect in my opinion even with a cat like in my case and once up to temperature mine pops on downshifting.


But Marco I'm sure as wonderful as the jetex system is its slightly restrictve because the backbox is chambered

________________________________________

Team SUPERCHARGED

Ninja I LIVE FOR THE 306 Ninja

Old Project thread

Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url =
Posted 12th May 2016 at 22:44
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marco gti6

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Post #24
Well if you do ditch it let me know if you are selling the center box and the decat mate
Posted 13th May 2016 at 09:10
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marco gti6

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Registered: 09 Mar 2009

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Post #25
armzsc6 wrote:
marco gti6 wrote:
I use a Jetex system as well on my lowboost 6. When i got my Car charged however i needed to have a cat installed to pass the MOT. So we chopped an original PugCat and we welded a universal 2,5" ceramic cat in place. To join it to the center section of the jetex we also Cut the 2.25" section on the center box to make it 2.5" all the way through. Now I am not happy with the fitment of the system as it is a little off after all the cutting and patching we did. If I was to do it again however I would not have chopped the center box as i can't imagine it being restrictive by that short section which is a little more narrow. I called jetex to get just the center silencer from the kit to use with a decat until they quoted me 180€ without postage which is quite steep if you ask me.

I my opinion I would leave your sistem as is mate they sound perfect in my opinion even with a cat like in my case and once up to temperature mine pops on downshifting.


Type Jetex silencer into ebay and loads of Simons or Jetex boxes come up for around £80


Just had a look but I only see universal silencers, not the GTI6 specific one from the complete exhaust system mate
Posted 13th May 2016 at 09:13
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