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 Posted: Tue Jan 31, 2012 5:29 pm |
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Joined: Nov 24, 2011
Posts: 18
Trade Rating: 0
Location: South Wales, Bedwas
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hi was wondering if anyone knows anything about the group n back boxes I haven't seen many about but I've heard one on you tube and it sounds perfect for what i what a bit of raspy-ness and nicely toned but does anyone think this maybe too loud for mot's or have any information on these before i go and get one of these also does anyone believe the manifold is worth changing cause many people have said more hassle than its worth for little results? thanks for anyone which can contribute some useful knowledge 
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| “If everything seems under control, you\'re just not going fast enough. Remember A Careful Driver Is One Who Honks His Horn When He Goes Through A Red Light” | |
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Posted: Tue Jan 31, 2012 6:27 pm |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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206 never has grp N backbox, although the pugsport one for 180Gti might consider as GrP N backbox but i never seen anyone put it on due to the price i guess
the pugsport Grp N backbox was built for 106 GTi and 205GTi/309; 306 gti-6 Grp N box should be build by Magnex
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Posted: Tue Jan 31, 2012 6:48 pm |
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Joined: Nov 24, 2011
Posts: 18
Trade Rating: 0
Location: South Wales, Bedwas
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ahh right these are some of the videos which i seen on youtube and said group n so i thought there must be ones out there www.youtube.com/watch?v=7igS3Vr4QRM this seems to be the back box which i would like and heres another which i found www.youtube.com/watch?v=BYGM0OAfAvQ would it be easier if i went to someone like longlife as there local and they do one with this tone for my 206?
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| “If everything seems under control, you\'re just not going fast enough. Remember A Careful Driver Is One Who Honks His Horn When He Goes Through A Red Light” | |
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Posted: Tue Jan 31, 2012 7:00 pm |
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Joined: Jun 12, 2011
Posts: 457
Trade Rating: +7
Location: Hertfordshire
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| Seabook wrote: |
the pugsport Grp N backbox was built for 106 GTi and 205GTi/309; 306 gti-6 Grp N box should be build by Magnex |
Scorpion made them after magnex didn't they?
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Posted: Wed Feb 01, 2012 3:05 am |
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Joined: Feb 10, 2010
Posts: 4014
Trade Rating: +2
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| lmilligan wrote: |
| Seabook wrote: |
the pugsport Grp N backbox was built for 106 GTi and 205GTi/309; 306 gti-6 Grp N box should be build by Magnex |
Scorpion made them after magnex didn't they? |
I know scorpion makes the pugsport units now, what makes an exhaust qualify as a group N?
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Posted: Wed Feb 01, 2012 12:29 pm |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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base on FIA regulation.
group N exhuast:
3.6 Exhaust system and silencer
Even when the specific provisions for a group allow the replacement of the original silencer, the cars competing in an open-road event shall always be equipped with an exhaust silencer complying with the traffic regulations of the country(ies) through which the event is run.
For all cars used in Rallies and unless the limits imposed by the local authorities are lower, the noise level on the open road must not exceed 103 dB(A) for an engine rotation speed of 3500 rpm for petrol engines and 2500 rpm for diesel engines.
The orifices of the exhaust pipes shall be placed at a maximum of 45 cm and a minimum of 10 cm from the ground.
The exit of the exhaust pipe must be situated within the perimeter of the car and less than 10 cm from this perimeter, and aft of the vertical plane passing through the centre of the wheelbase.
Moreover, adequate protection must be provided in order to prevent heated pipes from causing burns.
The exhaust system must not be provisional.
Exhaust gas may only exit at the end of the system.
Parts of the chassis must not be used to evacuate exhaust gasses.
Catalytic exhausts:
Should two possible versions of one car model be homologated (catalytic and other exhaust), the cars must comply with one or other version, any combination of the two versions being prohibited.
All cars equipped with a kit (VK) must be fitted with a homologated catalytic exhaust.
For all groups, all cars must be fitted with an original or homologated catalytic exhaust if this is obligatory in the country in which they are registered, unless the catalytic exhaust is not obligatory in the organising country, in which case it may be removed.
Group A exhaust:
Drawings III and IV on the Group A/B homologation form must be respected.
Downstream the exhaust manifold exit the exhaust is free provided that the maximum sound levels permitted in the country(ies) crossed are not exceeded if it is an event on open roads.
The exhaust exit must be inside the car's perimeter (see General Prescriptions, article 252.3.6).
For cars with turbocharged engines the exhaust can only be modified after the turbocharger.
In the case of rotary engines, and on condition that the original dimensions of the inlet ports of the exhaust manifold are respected, the dimensions of the ducts in the manifold are free.
Thermal screens may be fitted on the exhaust manifold, the turbocharger and on the exhaust device, with, however, the sole function of thermal protection.
- Normally aspirated engines :
The gas flow must never be modified by means of electronic or mechanical controls.
- Supercharged engines :
The gas flow may only be modified through the operation of the waste-gate and/or the control for injecting fresh air into the exhaust manifold.
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