cinzo:

1. The Nigerian atmosphere is already polluted.
2. I heard that removal of CAT actually decreases fuel consumption.

mishooo:

Oga Siena. This is really educating. I have the same problem as my cat is bad and the RPM thing happens but i scanned it and discovered its just that error that keeps on coming up I just decided to overlook it since i dont wanna buy new CAT now. I dikd not remove my CAT though and its a 20g00 VW beetle.

Are the dangers much??

Siena:

Your car will run pretty rough. I would imagine your car was built after 1999, and so will have 2 lambda sensors. one before the catalyst, the other after (downstream). The downstream probe is designed to measure hydrocarbons AFTER the catalyst, which is now missing. Then it sends data back to your ECU, by which a fuel map is created. This will alter the duty cycle of your injectors (duration they remain open) thus regulating fuel use.

With your catalyst missing, your downstream lambda probe (Oxygen sensor) will feed your ECU wrong data, which will try to compensate your fuel trim. It will over fuel like mad. Too much fuel going into your cylinders, over a period of time, will cause engine damage, due to "bore wash". This is whereby excess fuel washes the vital oil lubrication from your cylinder bores, causing premature wear. Your engine will begin burning oil, resulting in high oil consumption, visible as blue smoke. Diluting petrol with oil will result in a very low octane, which couple with a hot operating environment, will cause detonation, which could lead to holes being blown into your piston crowns. Or worse, if severe enough, detonation occurring whilst your piston's on its compression stroke could bend a rod. This could cause a conrod and piston to smash through the side of your engine block.

So I'll ask you - is there any sensible reason to run your modern car without a catalyst? You honestly listen to your "mechanic" who thinks it's a good idea to delete it? Where did you hear removal of a catalyst decreases fuel consumption?

Your car will run pretty rough. I would imagine your car was built after 1999, and so will have 2 lambda sensors. one before the catalyst, the other after (downstream). The downstream probe is designed to measure hydrocarbons AFTER the catalyst, which is now missing. Then it sends data back to your ECU, by which a fuel map is created. This will alter the duty cycle of your injectors (duration they remain open) thus regulating fuel use.

With your catalyst missing, your downstream lambda probe (Oxygen sensor) will feed your ECU wrong data, which will try to compensate your fuel trim. It will over fuel like mad. Too much fuel going into your cylinders, over a period of time, will cause engine damage, due to "bore wash". This is whereby excess fuel washes the vital oil lubrication from your cylinder bores, causing premature wear. Your engine will begin burning oil, resulting in high oil consumption, visible as blue smoke. Diluting petrol with oil will result in a very low octane, which couple with a hot operating environment, will cause detonation, which could lead to holes being blown into your piston crowns. Or worse, if severe enough, detonation occurring whilst your piston's on its compression stroke could bend a rod. This could cause a conrod and piston to smash through the side of your engine block.

So I'll ask you - is there any sensible reason to run your modern car without a catalyst? You honestly listen to your "mechanic" who thinks it's a good idea to delete it? Where did you hear removal of a catalyst decreases fuel consumption?

mikebuddy:


1] The catalyst does not have any sensor, hence is does not feed data to ECU.
2] Catalyst does not control oxygen, hence it cannot even feed data to oxygen sensor, how does it even feed this data when it has nothing to do with oxygen?
3] It was simply placed there to clean the air coming from engine before it heats the environment, lets not make the duty of this catalyst cumbersome.

Coldplay007:
Wait oo.. does this mean Sienna used to Bobo us all those years ago..
Cos all he wrote up there is just techie bobo..

mikebuddy:


1] The catalyst does not have any sensor, hence is does not feed data to ECU.
2] Catalyst does not control oxygen, hence it cannot even feed data to oxygen sensor, how does it even feed this data when it has nothing to do with oxygen?
3] It was simply placed there to clean the air coming from engine before it heats the environment, lets not make the duty of this catalyst cumbersome.

mikebuddy:


1] The catalyst does not have any sensor, hence is does not feed data to ECU.
2] Catalyst does not control oxygen, hence it cannot even feed data to oxygen sensor, how does it even feed this data when it has nothing to do with oxygen?
3] It was simply placed there to clean the air coming from engine before it heats the environment, lets not make the duty of this catalyst cumbersome.

HenryWilliams:


thank you sir.. So many misinformed Negroes here

GAZZUZZ:
calling all Demeanors......

Thread revived, I repeat thread revived.

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GAZZUZZ:
calling all Demeanors......

Thread revived, I repeat thread revived.

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captainking:

Is honmusa/autologic not part of them??

The young man is on a solo mission somewhere in the middle east....

GAZZUZZ:
calling all Demeanors......

Thread revived, I repeat thread revived.

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