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Author how to tune a 1.2 8v
c0r5a756
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Registered: 15th Apr 02
Location: stoke-on-trent
User status: Offline
23rd Feb 03 at 12:55   View User's Profile U2U Member Reply With Quote

basically just want it sound better
vauxtillidie
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Registered: 27th Dec 02
Location: Manchester Drives: Cav turbo/Corsa C20XE
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23rd Feb 03 at 12:57   View User's Profile U2U Member Reply With Quote

get the pvd bfo cone they sound mint and decent cat bak zorst system shud make it sound better
Makarus
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Registered: 25th Jun 02
Location: Nottingham/Derbyshire Boarder.
User status: Offline
23rd Feb 03 at 13:25   View User's Profile U2U Member Reply With Quote

Rember De-cat is a failure point on MOT unless you know someone who is willing to ignore it at an MOT place.

I have just got a stainless pipe to go from the cat back to the back box, I have been promised it will increase my exhuast noise, not yet got it fitted, but I will tell you when I do if this post is still knocking around.
dig dave2811
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Registered: 6th Jan 03
Location: newport sout wales WCM
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23rd Feb 03 at 13:28   View User's Profile U2U Member Reply With Quote

how much does a cat back and back box cost.
does anyone know
coz i wnat this with the sebring 6 by 4 inch tail pipe
hazey-corsa
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Registered: 24th Jun 02
Location: Cheshire
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23rd Feb 03 at 14:20   View User's Profile U2U Member Reply With Quote

get the bfo con sounds well good better than my old drill job and i ve got a janspeed cat back exhaust on the way but for sound get a 4inch or 5 inch rage exhaust
MattyB
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Registered: 13th Nov 01
Location: 118.5bhp :D
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23rd Feb 03 at 14:26   View User's Profile U2U Member Reply With Quote

erm BFO sounds good, but ur acceleration will drop seriously with it. They design was created expecially for the 1.4 and 1.6 16V engines, and i've found significant power decreases with the BFO cone on my 1.2 8v. I think this is mainly due to it being too large, in comparison with the engine size.

If u want to run ur 1.2 8v at its best, use a std airbox with holes drilled into the bottom (away from engine) and slap a K+N filter in it. Put a straight thru zaust on it, but use a Nova GTE manifold (said to give up to 5bhp). Give the engine a thourough service every year, andm ake sure ur using good quality spark plugs, new HT leads, decent oil etc. Oh and try and stick to 15"s to minimise performance probs caused by large rims.

Matt
PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
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23rd Feb 03 at 14:31   View User's Profile U2U Member Reply With Quote

There was a whole feature in last months total vauxhall mag on tuning the 1.2 8v lump, so it might be worth a try getting hold of a copy!
Makarus
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Registered: 25th Jun 02
Location: Nottingham/Derbyshire Boarder.
User status: Offline
23rd Feb 03 at 14:42   View User's Profile U2U Member Reply With Quote

PaulW would the copies still be on the shelves??
vauxtillidie
Member

Registered: 27th Dec 02
Location: Manchester Drives: Cav turbo/Corsa C20XE
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23rd Feb 03 at 14:47   View User's Profile U2U Member Reply With Quote

i think its still in the shops at the mo mate, if ur quik cud be wrong tho
hazey-corsa
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Registered: 24th Jun 02
Location: Cheshire
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23rd Feb 03 at 15:12   View User's Profile U2U Member Reply With Quote

that issue was pretty gus bought it just for that but its all pretty complicated stuff and after all thye did to thiers they it still didnt have as much hp or torque as a 1.4 8v so i relly wish id have got 1 now only 1 group higher in insurance too!
PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
23rd Feb 03 at 15:31   View User's Profile U2U Member Reply With Quote

yeah we still got it round my part
Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
User status: Offline
23rd Feb 03 at 16:22   View User's Profile U2U Member Reply With Quote

remember though that their 1.2 thay they tuned put out around 44bhp, and thats on an 80k miles engine. With all the bits they put on, they got it to 57bhp, but what is more important is that torque increased to 69 lb/ft. Thats not bad at all considering the engine capacity etc. That particular 1.2 with those mods would pull very well indeed.

Dave
mrempire
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Registered: 15th May 02
Location: Stoke-on-Trent
User status: Offline
23rd Feb 03 at 17:34   View User's Profile U2U Member Reply With Quote

ive got a BFO cone on my 1.4 sounds fecking mint, will be loads better when i get me 4 branch manifold on with my DECAT with my mongoose exhaust system
Cybermonkey
Member

Registered: 22nd Sep 02
Location: Sydney, Australia
User status: Offline
23rd Feb 03 at 17:38   View User's Profile U2U Member Reply With Quote

empire, expect big gains from that lot! hmmmm 4 branch manifold...

Dave

 
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