vaux-tech
Member
Registered: 28th May 06
Location: Preston, Lancs. Drives: Astra SRI turbo.
User status: Offline
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need help with my corsa gsi. it has a standard exhaust system on it and i cant decide what kind i want. what sort of difference in power/sound can i get from a cat back system compared to a b'box? what size tailpipe will look good without it looking like one of those universal jap crap ones! also, living in lancashire, where is the best place to go for an exhaust. are custom ones like powerflow any good for sound/power too? heard top gear is pretty good in burnley, plz help!
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Marc
Member
Registered: 11th Aug 02
Location: York
User status: Offline
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Back box, you won't really see any gains, you will get a louder noise though. A full system will give the car more mid range and approx 3-5bhp increase. Tail pipe wise I wouldn't go any bigger than 3". Powerflow have differing opinions. Blue Flame appear to be the choice for custom systems.
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BarnshaW
Member
Registered: 25th Oct 06
User status: Offline
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i got just a ashley backbox on ym gsi and it is fairly loud and pops if u tap the accelerator 
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vaux-tech
Member
Registered: 28th May 06
Location: Preston, Lancs. Drives: Astra SRI turbo.
User status: Offline
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wheres best place to go near me/not to far for a custom exhaust or cat back system?
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