| Saxo Engine/Performance If you're interested in tuning Saxo engines, or if you need to know something which is engine related... this is the place for you. |
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12th May 2009, 23:12
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#1
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Regular Poster
Join Date: Sep 2008
Location: leicester
Posts: 339
Car(s): A 1999 mk1 vtr
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decating
hi guys. I've got a 1999 mk1 vtr and thinking about decating it but because I only have one lambda sensor before the cat will I need to sleeve it.
Also will this affect my fuel consumption ?
Thanks
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12th May 2009, 23:23
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#2
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Saxperience Post Whore
Join Date: Jun 2007
Location: Chesterfield
Posts: 8,935
Car(s): Ibiza Cupra 204bhp
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it will affect the mixture of fuel yes and will run on more fuel than usual.
And you will need a sleeve or just make one 
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12th May 2009, 23:30
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#3
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Regular Poster
Join Date: Sep 2008
Location: leicester
Posts: 339
Car(s): A 1999 mk1 vtr
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Surely tho it shudnt affect the car because the sensor is mesuring the gasses before the cat so surely it shudnt be any different if I leave the sensor in
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12th May 2009, 23:52
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#4
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Saxperience Post Whore
Join Date: Mar 2003
Location: United Kingdom (England)
Posts: 7,064
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No need to sleeve a single lambda engine. As it reads the gases before the cat.
Keep the cat in a safe place for MOT time.
Shouldn't effect the fuel consumption.
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Stu QIf in doubt, just repeat the answer to the question....
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12th May 2009, 23:56
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#5
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Super Moderator
Join Date: Feb 2004
Location: Tonbridge United Kingdom (England)
Posts: 38,236
Car(s): Vtr, 172, throttle bodied track slut
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Quote:
Originally Posted by evans1089
it will affect the mixture of fuel yes and will run on more fuel than usual.
And you will need a sleeve or just make one |
any reason you feel it would need one when the sensor is before the cat you are removing?
__________________
God made beer, women and Throttle bodies 
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13th May 2009, 01:22
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#6
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Saxperience Addict
Join Date: Jan 2007
Location: Aylesbury, Bucks
Posts: 12,836
Car(s): Yeaaahh Fiesta
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lambda is infront of the cat which isnt a problem, you wont need to touch it when removing the cat
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13th May 2009, 01:26
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#7
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Saxperience Forum Bum
Join Date: Jan 2008
Location: Down't road from Sheffield
Posts: 4,641
Car(s): Was:16v 106 XS ..... Now: Import 1.8 MX5
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As said, it's only cars with 2 lamdas that need one sleeving, you sleeve the second one, just so it thinks the cat is still working efficiently. First one controls fuelling, so whether the cat is there or not, this isn't affected.
__________________
Form and/or Funtion - A blog in association with CombustionPunks.
Currently: '93 1.8 Eunos Roadster S Special. Does skids and err'ting.
Previously: '96 1.5D Peugeot 106 XLD..... '96 1.6 16v Peugeot 106 XS - 0-60: 6.6s & 1/4m: 14.95s @ 90.14mph
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13th May 2009, 08:03
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#8
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Regular Poster
Join Date: Sep 2008
Location: leicester
Posts: 339
Car(s): A 1999 mk1 vtr
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cool thanks for the help
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13th May 2009, 08:54
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#9
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Saxperience Post Whore
Join Date: Jun 2007
Location: Chesterfield
Posts: 8,935
Car(s): Ibiza Cupra 204bhp
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Quote:
Originally Posted by Ryan
any reason you feel it would need one when the sensor is before the cat you are removing?
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i do apologise i have a janspeed manifold.. and a mark2
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