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Topic: HO2S12 without cat!!! (Read 1476 times) |
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OHC
Junior Member
I love YaBB 1G - SP1!
Posts: 97
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HO2S12 without cat!!!
« on: Dec 7th, 2005, 6:15am » |
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Hello!
I need a tech advise from site admins. Everybody’s opinion is also welcome. The cat on my 2.0 16V 1995 has died – it roars on 2000 rpm. The only option I have is to remove it. The prob is to cheat post-cat HO2S. Eric_R suggest supplying a small voltage to it, but it’s difficult for me. But I’ve read on the main site that catalyst monitor is performed only if EGR is complete. Since I have the EGR plugged due to the valve malfunction the monitor will not be complete and OBD won’t carry out catalyst monitor - and bingo! I can remove the cat without any problem.
Any opinion welcome
Best regards,
Serguey
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scorpio_man
Administrator
Ford Kuga awd
Posts: 5654
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Re: HO2S12 without cat!!!
« Reply #1 on: Dec 7th, 2005, 9:20pm » |
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hi there
you don't need to do anything to the lambda sensor(s)!  you're only removing a bit between the sensors. in fact, if you did something to the sensors, the fueling would be all over the place!
i've been running without a cat for over a year now (lpg) without any problem. 
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OHC
Junior Member
I love YaBB 1G - SP1!
Posts: 97
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Re: HO2S12 without cat!!!
« Reply #2 on: Dec 8th, 2005, 5:50am » |
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Hello!
Thanks for reply. Have you performed an OBD scan without cat! Have you tried it on petrol? What about LTFT and DTC? It's really interesting!
Best regards,
OHC
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scorpio_man
Administrator
Ford Kuga awd
Posts: 5654
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Re: HO2S12 without cat!!!
« Reply #3 on: Dec 8th, 2005, 7:05pm » |
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hi there
if there is nothing wrong with the fuel system before removing the cat, then there won't be anything wrong afterwards.
as i said, the car doesn't mind if the cat is there or not as long as the lambda sensors are working.
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Octavian_P
Senior Member
 
Posts: 1126
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Re: HO2S12 without cat!!!
« Reply #4 on: Jan 8th, 2006, 7:45pm » |
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From what i learned from this forum is that the front lambda (the one before the CAT) is the real importatn one, the rear one is less important. I also want to take the cat out but just for higher performance.
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2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
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scorpio_man
Administrator
Ford Kuga awd
Posts: 5654
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Re: HO2S12 without cat!!!
« Reply #5 on: Jan 8th, 2006, 8:23pm » |
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hi there
with an induction air filter kit and the cat removed, you'll get +20 bhp!!! 
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Octavian_P
Senior Member
Posts: 1126
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Re: HO2S12 without cat!!!
« Reply #6 on: Jan 8th, 2006, 8:53pm » |
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Yes i know, that's i'm after, lots of happy horses for my humble 2.3
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2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
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david_molloy
Full Member
I'm a YaBB newbie!
Posts: 172
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Re: HO2S12 without cat!!!
« Reply #7 on: Jan 19th, 2006, 8:16pm » |
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What type of induction kit ??
K&N??
Thinking of K&N for 24V
david
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david_molloy
Full Member
I'm a YaBB newbie!
Posts: 172
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Re: HO2S12 without cat!!!
« Reply #9 on: Jan 20th, 2006, 3:10pm » |
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Thanks for info.
Like you say latter one looks a nice piece of kit
Think I'll leave it for now until more knowledgable with standard Scorpio
david
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