De-cat and exhaust modify

[Kurty]

, decat will have problem at Low RPM.

But I think is apply to smaller CC car and for those ppl like me want to maintain RPM less then 3000 RPM.

 

may i ask what problems arising from de-cat?

[Whisper_2000]

Not enough power?

 

After de-cat, what next...extractor, add TC, etc.

 

So you bought a wrong car lah.

 

Buy a more powerful car next time.

 

I hate those that de-cat without due care for the environment.

 

Do it the proper way. Get the approved high flow cat for your model.

 

 

Agree. Was watching a documentary about about methane gas releasing into atmosphere about 10-20 times(i tink) worse than carbon monoxide causing global ice to thaw rapidly in Siberia(size bigger than the entire US).

 

Global warming is real !

 

Do what is legal & keep our carbon footprint small

 

 

Taken from Wiki:

 

Siberia - With an area of 13.1 million km

Edited August 22, 2010 by Whisper_2000

[Kurty]

no worries, i understand.

 

having the cat helps the environment.

 

i just curious and wish to learn about it, not action or thoughts of doing it at this moment.

[Kurty]

read that modify the exhaust and stuff, the fine is 1k...

 

scary..

[Ken4555]

I understand under LTA ruling petrol cars imported into Singapore must come equipped with approved cat. If your ride is before this ruling there is no need to have a cat.

LTA have since ( not sure of the date) is only a licensing and enforcement agency, all testings of new type-approved vehicles imported are inspected by the authorised stations.

 

Many car owners place dummy cat in position just to try and fool the inspectors.

 

 

PS Pl hold yr horse , you sound very angry and unhappy. Have nice Sunday.

 

My Sunday was terrible...

 

but anyways from what i heard the test centers emmission test is to test carbon monoxide... think it will be damn costly to check for all the other chemicals in the exhaust... from what i know the cat is a visual test...

 

 

[Eyke]

don't waste ur money.

 

modern cats are non-restrictive, removing them gives negligible gains,

only serves to increase air pollution.

 

"Catalytic converters get a bad rap and are blamed for restricting exhaust

gas flow and reducing performance. This may have been true when

converters were first introduced in the 1970

[Ken4555]

Thanks for the great views.

 

30 for de cat is really cheap loh. I just tried calling MAN, guess they are closed on Sunday.

 

I'm driving a manual, 1.1

 

So the emission test is for the cat, interesting.

Good point there, de cat seems gd but if touch wood fail the test. May have a problem is getting a replacement cat.

 

For the exhaust, think of going straight through.

 

My ride is an opc so inspection is on 3,5,7,9yrs

 

May I ask what is bullet? I saw my friends ride, removal of the Milo tank. Said to be very good but way too noisy. Not going for such.

Best part is I went to do soundproofing with him , with that, not diff inside his car

 

 

what great news?... modifying any part of your car involves risk.. i've heard of insurance companies revoking claims due to the car being highly modified...

 

exhaust going straight through??? 1.1cc i dont think its a good idea unless you got a turbo, supercharger or did some porting...

 

lets put it this way... to make exhaust loud is cheap... to make it quiet is expensive... more work done in an original exhaust to quiet things down... want loud a tin can will do the job..

 

expensive brands that give nice bassy sounds... this is when the packing plays an important role...

 

usually most cars have the extractors, cat may be near the engine bay or below the engine, a mid muffler, and a tail muffler...

 

usually changing the tail muffler only doesnt give much difference in sound unless high rev..

 

pls note that nothing sounds worse than a LOUD exhaust but the car like no power... (think MY sagas, wiras, the slow ones)

 

my thoughts on de-cat AND THE ENVIROMENT AS MANY BROS HERE SEEM CONCERNED ABOUT... the cat has a life span (i read its abt 5yrs i could be wrong) and works only when its hot... once it dies it clogs up the flow in the exhaust pipe. then it will do nothing but restrict the flow.. so i say get rid of it then... i am very honest to say i will not spend a cent to buy a new cat when mine dies...

 

AND to all those ppl who want to show that they love the enviroment, make a statement and leave a smaller foot print and all the b-------t... please sell your car, take public transport or cycle... maybe you die die need a car then buy a CNG car, electric car... or a hybrid... if not then just Shhhhhhhhh....

[Watwheels]

Seriously ppl, you should Google and see the break down of what's the catalytic converter is all about. It has a sealed stainless steel casing and can be easily removed. All the workshop have to do is drill through(from the inlet/outlet tube) or pummel through the soft reactive materials and the exhaust gases will go through w/o obstructions. They actually quoted $60 for that kinda work? Sekalee the bugger didn't even touch it and charge you $60. Becos it's sealed, they cannot possibly waste time, waste labour on opening the damn thing, remove the reactive material and sealing it again. It'll become damn obvious and stupid to go thru it.

 

The thing about the catalytic converter being a "quick-fix" is well known in the motorcar industry. The harmful gases cars emits are here to stay and no permanent solution is available to totally solve it. Turning Carbon Monoxide to CO2, as if CO2 is not harmful to the environment. To be honest if you want to save the environment, stay at home cos even if you cycle you breathe out CO2 too. How ironic.

 

The emission test machine that test centres have I think only detects the amount of CO2 coming out of the exhaust cos ppl claim they can pass even when they de-cat the exhaust. So if Carbon Monoxide is spewing all over the shop what CO2 is there to detect? Comfirm pass one mah, and they even chop for you.

Edited August 22, 2010 by Watwheels

[Whisper_2000]

what great news?... modifying any part of your car involves risk.. i've heard of insurance companies revoking claims due to the car being highly modified...

 

exhaust going straight through??? 1.1cc i dont think its a good idea unless you got a turbo, supercharger or did some porting...

 

lets put it this way... to make exhaust loud is cheap... to make it quiet is expensive... more work done in an original exhaust to quiet things down... want loud a tin can will do the job..

 

expensive brands that give nice bassy sounds... this is when the packing plays an important role...

 

usually most cars have the extractors, cat may be near the engine bay or below the engine, a mid muffler, and a tail muffler...

 

usually changing the tail muffler only doesnt give much difference in sound unless high rev..

 

pls note that nothing sounds worse than a LOUD exhaust but the car like no power... (think MY sagas, wiras, the slow ones)

 

my thoughts on de-cat AND THE ENVIROMENT AS MANY BROS HERE SEEM CONCERNED ABOUT... the cat has a life span (i read its abt 5yrs i could be wrong) and works only when its hot... once it dies it clogs up the flow in the exhaust pipe. then it will do nothing but restrict the flow.. so i say get rid of it then... i am very honest to say i will not spend a cent to buy a new cat when mine dies...

 

AND to all those ppl who want to show that they love the enviroment, make a statement and leave a smaller foot print and all the b-------t... please sell your car, take public transport or cycle... maybe you die die need a car then buy a CNG car, electric car... or a hybrid... if not then just Shhhhhhhhh....

 

Bro, i'm changing to gs 450. U have a problem with a fellow helping one another?

 

[Ken4555]

Bro, i'm changing to gs 450. U have a problem with a fellow helping one another?

 

I have problems with whoever has problems with me... why you got problem with me ah?

 

who you helped? helped what? cause i have totally no idea how you helped TS with your post...

 

you can drive whatever you want if you can afford it... but since you so concerned about pollution, get a smaller hybrid lah, better get one without air-con...... or a smaller car... maybe a chevy spark will produce less pollution then your gs 450 in the long run... make a stand... stop eating beef... cause cows fart too much and thin the ozone... get rid of the air-cons in your house...

 

 

[Ken4555]

Seriously ppl, you should Google and see the break down of what's the catalytic converter is all about. It has a sealed stainless steel casing and can be easily removed. All the workshop have to do is drill through(from the inlet/outlet tube) or pummel through the soft reactive materials and the exhaust gases will go through w/o obstructions. They actually quoted $60 for that kinda work? Sekalee the bugger didn't even touch it and charge you $60. Becos it's sealed, they cannot possibly waste time, waste labour on opening the damn thing, remove the reactive material and sealing it again. It'll become damn obvious and stupid to go thru it.

 

The thing about the catalytic converter being a "quick-fix" is well known in the motorcar industry. The harmful gases cars emits are here to stay and no permanent solution is available to totally solve it. Turning Carbon Monoxide to CO2, as if CO2 is not harmful to the environment. To be honest if you want to save the environment, stay at home cos even if you cycle you breathe out CO2 too. How ironic.

 

The emission test machine that test centres have I think only detects the amount of CO2 coming out of the exhaust cos ppl claim they can pass even when they de-cat the exhaust. So if Carbon Monoxide is spewing all over the shop what CO2 is there to detect? Comfirm pass one mah, and they even chop for you.

 

hey bro you right sia...

 

i suspect you have heard stories or seen mechs charge for a de-cat and didnt even touch it... maybe just put some greased finger prints on it...

 

btw i understand some cars engine check light will go on when the cat is removed... now how do you solve the check light problem without a cat?

[Congxdead]

may i know if let says, i change my exhaust to non-lta approve, extractor illegal, and midpipe illegal.. how much will the fine be?

[Coupecabriolet]

Not enough power?

 

After de-cat, what next...extractor, add TC, etc.

 

So you bought a wrong car lah.

 

Buy a more powerful car next time.

 

I hate those that de-cat without due care for the environment.

 

Do it the proper way. Get the approved high flow cat for your model.

 

agree with above why go through so much just for that little gains? and after that, all the worries and justifications.

 

get a better car next time.

 

caring for the environment is one thing. going through all these for peanuts is another though.

 

dont tell me its a passion for modding, because alot of other areas you can mod. power hungry, but decat will not satisfy that greed.

[Yeobh]

By the early 1990's test centres were already fully equipped with 4 gases emission tester - the four gases are HC CO CO2 NOX. I understand only two gases are being evaluated the rest are for data collection purpose.

 

PS It is a must, if the cat is not there, automatically you fail the undercarriage test. Dummy cat can be very easily detected, as I have mentioned earlier all the tell tale signs. Even workshop with a non-contact Thermometer can even detect a dummy or fault cat.

[Watwheels]

hey bro you right sia...

 

i suspect you have heard stories or seen mechs charge for a de-cat and didnt even touch it... maybe just put some greased finger prints on it...

 

btw i understand some cars engine check light will go on when the cat is removed... now how do you solve the check light problem without a cat?

Like I said, if you Google the image of a catalytic converter you will notice there's a plug for the oxygen sensor. If ppl do not know how to remove & install it back properly and spoil the sensor, very likely the CEL will light up.

[Subarugt]

spare bullet for sale kekeke who want

[Kurty]

chill brothers.

 

make love not war.

 

well, the origin of this thread is to learn about de-cat and modifying the exhaust.

 

i understand the passion of environmentalist, and i sincerely respect that too.

 

 

bolting on a cat-back system is a good way to go."

 

may i ask what is cat-back?

[Prostcode]

may i know if let says, i change my exhaust to non-lta approve, extractor illegal, and midpipe illegal.. how much will the fine be?

From 50 Singapore Dollars (SGD).