MK2 VTS De-Cat Question

1. Steve Saxperience Hardcore! Joined: Mar 2005 Newcastle Upon Tyne Posts: 19910 CW Honda Integra DC5

   #1 18th August 2007, 09:37

   I have a magnex de-cat pipe to go on the old girl, however it doesnt have the hole for the sensor to go in.
   
   1st Question
   De-catin does it make a lot of difference?
   
   2nd Question
   Will the engine line always be on the dash
   
   3rd Question
   Do i just leave the sensor dangling or?
   
   I have heard about those sleeves but surely that would just leave the light on?
   
   
   Cheers
   Steve
2. VTR-98 Regular Poster Joined: Mar 2007 Hull Posts: 312 Veilside Celica WRC gt4 324 BHP 350ib'ft torque

   #2 18th August 2007, 10:00

   Yes it does make a difference, and dont kow to the other questions but will also need to know as am picking up a 2000 vts today
3. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

   #3 18th August 2007, 10:02

   Tut tut Steve, this has been covered sooo many times before. However, I will try to answer your 3 questions, because I'm in a good mood!
   
   1) Yes, it's worth doing if you are looking to get as much power out of your engine as possible. Due to the restrictions in exhuast gasses that the CAT causes, you'll find that without it, your power will open a bit more towards the top end.
   
   2) I pressume you mean "engine light?" ...The reason the 'engine check' light would become illuminated on the dash, is because the oxygen sensor which sits after the CAT will see that the CAT is not doing its job properly. You can fool this sensor by taking it out of the system completely, away from any exhaust gasses, and it won't report back to the ECU about the CAT being problematic.
   
   3) No! The sleeve is for a reason. For the oxygen sensor to take readings, it needs to heat up to a rather high temperature. If you left it hanging around, it could burn something, or even set fire to your car! It needs to be well protected also, as these sensors are quite delicate.
4. Yates Saxperience Hardcore! Joined: Mar 2005 Pompey/Darlo Posts: 31546 MK1 - 1.1 Animal

   #4 18th August 2007, 12:46

   stick sleeve on and light will go off
5. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

   #5 18th August 2007, 13:00

   Quote:

   Originally Posted by Yates stick sleeve on and light will go off

   Can't you read or something?
6. Karl Saxperience Hardcore! Joined: Apr 2006 Ashford Posts: 25611 LY R26

   #6 18th August 2007, 13:03

   Quote:

   Originally Posted by Steve_VTS I have a magnex de-cat pipe to go on the old girl, however it doesnt have the hole for the sensor to go in. 1st Question De-catin does it make a lot of difference? 2nd Question Will the engine line always be on the dash 3rd Question Do i just leave the sensor dangling or? I have heard about those sleeves but surely that would just leave the light on? Cheers Steve

   1.) yes, quite a noticeable difference in throttle response i found.
   2.) Yes.
   3.) unplug the sensor.
7. Yates Saxperience Hardcore! Joined: Mar 2005 Pompey/Darlo Posts: 31546 MK1 - 1.1 Animal

   #7 18th August 2007, 13:32

   Quote:

   Originally Posted by Toad Tut tut Steve, this has been covered sooo many times before. However, I will try to answer your 3 questions, because I'm in a good mood! 1) Yes, it's worth doing if you are looking to get as much power out of your engine as possible. Due to the restrictions in exhuast gasses that the CAT causes, you'll find that without it, your power will open a bit more towards the top end. 2) I pressume you mean "engine light?" ...The reason the 'engine check' light would become illuminated on the dash, is because the oxygen sensor which sits after the CAT will see that the CAT is not doing its job properly. You can fool this sensor by taking it out of the system completely, away from any exhaust gasses, and it won't report back to the ECU about the CAT being problematic. 3) No! The sleeve is for a reason. For the oxygen sensor to take readings, it needs to heat up to a rather high temperature. If you left it hanging around, it could burn something, or even set fire to your car! It needs to be well protected also, as these sensors are quite delicate.

   Quote:

   Originally Posted by Toad Can't you read or something?

   Yes i can, please highlight the bit where you say the sleeve will turn the engine management light off, i cant quite see it.
8. Steve Saxperience Hardcore! Joined: Mar 2005 Newcastle Upon Tyne Posts: 19910 CW Honda Integra DC5

   #8 18th August 2007, 17:58

   didnt really plan on de-catin today
   But couldnt get magnex centre to fit the cat so de-catted it, just unplugged the sensor, how long for the light to come on as it isnt on yet
   Wotn fek my car having that light on will it?
   
   Exhaust isnt sitting to good either points down a bit, should sort itself once lowered plus was getting tired of playing around with it, so looks a bit shit but sounds alright!
9. Karl Saxperience Hardcore! Joined: Apr 2006 Ashford Posts: 25611 LY R26

   #9 18th August 2007, 20:41

   no,
   mines not fooked up,
   lights on,
   but who cares...
   got a diagnostic tool to turn that badboy off for MOT's when i put the cat on.
   
   tbh - mine didnt come on for 600 miles.
10. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #10 18th August 2007, 20:49

    Quote:

    Originally Posted by Yates Yes i can, please highlight the bit where you say the sleeve will turn the engine management light off, i cant quite see it.

    Answers number 2 and 3. Stop trying to be difficult. You could clearly see I spent some time trying to help on this thread, and you obviously pissed on my efforts. Perhaps I shouldn't bother in future...
11. Steve Saxperience Hardcore! Joined: Mar 2005 Newcastle Upon Tyne Posts: 19910 CW Honda Integra DC5

    #11 18th August 2007, 22:11

    cheers for comments, its made the exhaust really loud, pops and car now pulls from 3k revs instead of 4k chuffed all round.
    Lights now on
    
    cheers
12. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #12 18th August 2007, 22:23

    Quote:

    Originally Posted by Toad Answers number 2 and 3. Stop trying to be difficult. You could clearly see I spent some time trying to help on this thread, and you obviously pissed on my efforts. Perhaps I shouldn't bother in future...

    Stop whining Toad...
13. Yates Saxperience Hardcore! Joined: Mar 2005 Pompey/Darlo Posts: 31546 MK1 - 1.1 Animal

    #13 18th August 2007, 22:42

    wasnt trying to be difficult just summerising what you said in 5 words
    
    and yes stop twisting on fella!
14. bullit Saxperience Hardcore! Joined: Dec 2005 e-hollywood Posts: 17160 toyata hilux

    #14 18th August 2007, 23:52

    Quote:

    Originally Posted by Toad Can't you read or something?

    you tell him toad
15. lavo-vts Saxperience Forum Bum Joined: Jul 2006 derbyshire Posts: 3515 mk1 vts (ETW Mercury Grey)

    #15 19th August 2007, 22:40

    get a mk1 vts you wont have this problem then lol
16. samcook Saxperience Forum Bum Joined: Dec 2005 evesham, worcs United Kingdom (England) Posts: 3813 197 cup

    #16 20th August 2007, 10:39

    i had mine in a sleeve and the light still came on :s i plugged the sensor back into the decat and the light came on after about a 1000 miles and is still on now drives no different tho
17. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #17 20th August 2007, 10:56

    That's correct, it shouldn't drive any differently, as that sensor is specifically for telling the ECU the condition of the CAT.
18. Yates Saxperience Hardcore! Joined: Mar 2005 Pompey/Darlo Posts: 31546 MK1 - 1.1 Animal

    #18 20th August 2007, 11:22

    could that be the earth wire tho sam?
    
    mine came on and was on diagnostics at citroen they told me i needed a new one, said il leave it for now, asked for copy of diagnostics report and all it said was earth wire loose hence why light was on
19. samcook Saxperience Forum Bum Joined: Dec 2005 evesham, worcs United Kingdom (England) Posts: 3813 197 cup

    #19 20th August 2007, 11:41

    ive got one of those code reader things and its coming up as insufficent catylst
20. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #20 20th August 2007, 11:48

    What's the generic code Sam? P0136?
21. samcook Saxperience Forum Bum Joined: Dec 2005 evesham, worcs United Kingdom (England) Posts: 3813 197 cup

    #21 20th August 2007, 15:12

    dunno of hand mate, something like that tho