cfuk
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 2nd Jan 07
Location: Wigan
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does anyone know what this is and what it does? i was looking at a corsa on ebay and in the spec it said it had one fitted and that it was for better mpg
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danny20
Member
Registered: 14th Mar 06
Location: Walkden, Greater Manchester
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abolute shite mate i had one on my old corsa, i didnt see any difference at all. complete waste of money
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mattievRS
Member
Registered: 20th May 06
Location: Leicester
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same here mate!!It was total wank,made a rasping noise and fuck all else.Steer well clear as its a waste of money!!!
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dan_c4rsa
Member
Registered: 12th Dec 06
Location: North Yorks Drives: MK3 Seat Cupra
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only thing its reli done for mine is better fuel consumption.
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Craigy|uk
Member
Registered: 18th Dec 06
Location: Norton, North Yorkshire
User status: Offline
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wot car have u got dan
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Gary
Premium Member
Registered: 22nd Nov 06
Location: West Yorkshire
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Supposedly bleeds air from your braking system. Not good
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Warren G
Member
Registered: 14th May 06
Location: Kent
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buy mine?
http://www.corsasport.co.uk/board/viewthread.php?tid=329427&pid=4206153#pid4206153
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gingerob
Member
Registered: 11th Apr 06
Location: North West
User status: Offline
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quote:
Originally posted by glb86
Supposedly bleeds air from your braking system. Not good
yup i had exactly that. dodgy.
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Will_Sport
Member
Registered: 28th Jun 04
Location: Notts
User status: Offline
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had one on my old 1.4
did get a better fuel comsumption. the brake servo vacuum pipe accounts for about 5% of your air intake. all it does is open up when there is more vacuum (ie greater need for air).
so in theory when it wants more air to run properly, this lets it get it.
i saw slight better mpg with mine, and never had a problem with it, turned it down so it didn't rasp and only worked when there was more vacuum and not just coasting along.
plus there is a no return valve on brake servo, so won't cause brake problems if fitted correctly.
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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what a load of rubbish
brake servo vaccum hose is to supply a vaccum feed to the brake servo. no matter wether the engine needs more air or not, any air added in after the icv or throttle plate isnt going to help things whatsoever.
if anything they will reduce performance due to the MAP sensor (where fitted) having a lower manifold absolute pressure reading which will cause the engine to run slightly rich then the lambda sensor will sense this leaning out the mixture slightly and putting you back to square 1.
eco valve thingys are pointless. basicly just an air leak, if you want just drill a small hole in a vaccum pipe, will have the same effect.
[Edited on 28-01-2007 by Dave A]
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