M4tt
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Registered: 18th Apr 03
Location: Potters Bar
User status: Offline
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whats the advantages and disadvantages of having the bigger bore of the grp A over the normal one?
does it mean more power but less lower down torque - will I have to rev my car alot more to get the same performance? 
cheers
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wiggsy
Member
Registered: 18th Feb 04
Location: Bromley
User status: Offline
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also to jump on this one i was getting scorpion imola back box
does this come in "group A?" sorry for being dumb is there two types pf back box?
this is for coesa c
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whitter45
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Registered: 15th Nov 02
Location: Norton
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bigger bores are usually fitted to turbo cars as they reduce back pressure so turbo can spin faster. not really useful on N/A cars
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M4tt
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Registered: 18th Apr 03
Location: Potters Bar
User status: Offline
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cool, ill jsut get a normal one then, its for a 1.6 corsa if that makes n e diff (prob don't)
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
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apparently its only suitable if ur cars got heavy engine mods, if it has a turbo or if its a 2.0litre or above...
i got a group A scorpion cat back zorst on my 1.6 16v gsi with a induction kit, and to tell truth i didnt feel any loss/gain in power or acceleration
instead it smoothed out the revs nicely, and made it more responsive
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Red_SXi
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Registered: 23rd Sep 02
Location: Dunstable Drives: 52 Plate BMW 3 M Sport Coupe
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Where u getting it from mate? U2U if you wanna deal with me again
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miles
Member
Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
User status: Offline
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What are the bores of the 2?
You wont be able to get it for a back box only as it wouldn't line up with the bore of the system.
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JJ
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Registered: 20th Apr 00
Location: Northern Ireland
User status: Offline
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I have the group a system, it has a 2.5" bore, to he honest all it has done is make the car sound really nice lol not much else for performance, oh and it looks the job too 
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the_legend_of_yrag
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Registered: 7th Jul 03
Location: Cambridgeshire
User status: Offline
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I also have a group a system, but selling my back box if anyone wants it? As im getting a single exit each side!!
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miles
Member
Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
User status: Offline
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2.5" is OTT on anything but mega spec engines.
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JJ
Member
Registered: 20th Apr 00
Location: Northern Ireland
User status: Offline
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Its only 2.5" from the centre box to the back box, where it joins to the decat pipe its the same as standard...
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broster
Premium Member
Registered: 6th Dec 02
Location: Drives: E39
User status: Offline
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i swapped my 2.5 inch bore, was a scorpion suystem, got a bfo one now, smaller bore
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mwg
Member
Registered: 19th Feb 04
Location: South Lakes
User status: Offline
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quote:
Originally posted by Red_Sxi
Where u getting it from mate? U2U if you wanna deal with me again
Do u deal in Remus Exhausts too mate?
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corsabmo-fo
Member
Registered: 4th Dec 03
Location: Rainhill, NR St Helens
User status: Offline
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A mate of mine has a 5" universal rage backbox on his civic 1.4 and it sounds porn. Must admit it does look shit though. And a health hazard to small children as thier heads can become lodged inside.
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AJBek
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Registered: 31st Jul 02
Location: Ayrshire
User status: Offline
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I have 2.25 straigh through with racing 4 branch manifold. Has made a huge difference, but that is probably due to the combination of the manfold and system. My car also has TBs
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M4tt
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Registered: 18th Apr 03
Location: Potters Bar
User status: Offline
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seems like i already know the answer to my question 
http://www.corsasport.co.uk/board/viewthread.php?tid=96636
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p16vlv
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Registered: 15th Jun 02
Location: rossendale
User status: Offline
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i used to have the scorpion group a on mine but as soon as i had a 2 and a quarter" powerflow system on mine it made a big difference, it had no low down power at all. it might have 2.5" pipework but the boxes are 2".
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M4tt
Member
Registered: 18th Apr 03
Location: Potters Bar
User status: Offline
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quote:
Originally posted by p16vlv
i used to have the scorpion group a on mine but as soon as i had a 2 and a quarter" powerflow system on mine it made a big difference, it had no low down power at all. it might have 2.5" pipework but the boxes are 2".
sorry for being thick like
so did the scorpian have no low down power, or the 2 and quater powerflow one?
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p16vlv
Member
Registered: 15th Jun 02
Location: rossendale
User status: Offline
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the scorpion had nothing , my mate has my old system on his car. we both run 2.0l on 17"s and mine wastes his car on acceleration and top end and noise.
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