mentalasanything
Member
Registered: 27th Jan 04
Location: Hengoed Drives:Corsa Sport
User status: Offline
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I'd like to hear all your oppinions on de-cat pipes, I've been offered one by Longlife exhausts for £50, that's with a flange joint at either end and at either end of my cat, for easy replacement at MOT Times. Are they as good as made out to be and what's the deal with the law?
Cheers,
Lee 
[Edited on 1313-0606-2004200420042004 by mentalasanything]
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Big Col
Member
Registered: 8th Sep 99
Location: Ayrshire, Scotland Drives: '00 Astra 2.0 SRi
User status: Offline
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i used to have a decat pipe on mine.
on the plus side - showed +4bhp and +2lb/ft on the rollers. Eliminated the flat spot I had at 3500rpm. Improved MPG. I was getting about an extra 40-50 miles per tank.
on the down side - it was very noisy. Very boomy around the 2000-3000rpm mark.
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corsa3.0v6
Member
Registered: 13th Jul 03
User status: Offline
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The law will shag you 
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ed
Member
Registered: 10th Sep 03
User status: Offline
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Engine conversion dudes will be ok though 
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drunkenfool
Member
Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
User status: Offline
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Im getting decat on mine this weekm, but its loud enough as it is. Can i just get a bigger silencer or something put on? And how much louder does a decat make it?
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broster
Premium Member
Registered: 6th Dec 02
Location: Drives: E39
User status: Offline
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sportex ones come with a slinecer in them......think some others do aswell
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3CorsaMeal
Member
Registered: 11th Apr 02
User status: Offline
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i had one for £50 and it sounded shite, real loud and like a tank........
took it off cos it was so bad, any gains were minimal and unoticed to the realistic eye
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drunkenfool
Member
Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
User status: Offline
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its an extra 7bhp on the C20XE though apparently, which is pretty good for the cost of a bit of pipe, and legally i dont need a cat cos its a 1991 engine. I am worried about what it might sound like though. :S
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mentalasanything
Member
Registered: 27th Jan 04
Location: Hengoed Drives:Corsa Sport
User status: Offline
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This one retails at $140, its a custom made ss 1, I got it for $50 because Ive been back 2ice with a prob with the cat>system join on my new ss exhaust, that's y its a double flange joint. My exhaust aint loud anyways (Midsport tone), if it sounds like a tank, the guarentee says if I dont like it and have a valid reason I can have it put back the way it was. I was told a 5-10% increase in power and torque too???
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