CATS = ? And what is their function?

...hey ...I just figured out the other day that CAI = cold air intake... so be easy on me.
N.

 

catalytic converter...

to keep your engine from pushing out air...

to keep the envrionment safe and letting our cars polute it...

take them off!

 

which exhaust systems eliminate cats....ive been on this forum for some time..mastered the art of body modifyin...just dont know much about performance ABC's

im getting the injen exhaust and intake this week though

 

plus...would getting the injen exhuast and/or intake prevent me from passing inspections?...plus..will the dealer service my car with it on..or give me a hard time

 

No exhaust system eliminates the cats. Many people on this forum do sell "test-pipes" (run a search for them). Test pipes bypass and eliminate your cats. As far as the Injen exhaust and intake goes, your dealer shouldn't hassle you and they won't prevent you from passing inspection. Eliminating the cats will prevent you from passing inspection though, so there's where the decision of test-pipes or keeping your cats comes into play. Hope this helped.

 

amuse gets rid of cats...

 

The purpose of the cats is not to keep your car from pushing out air. They heat up to extremely hot temperatures and essentially incinerate the toxins in your exhaust as they pass through so we don't have to worry about them getting into the air. The cats happen to be, in general, very restrictive to airflow as a side effect.

 

hmm..now i get it...cats are bad for performance..but good for environment

think about it this way....if it ever happened that polution was so high because of people eliminating cats...so high that it started killing ppl....it wouldnt happen in our lifetime ..so there is nothign to worry about

 

uh oh. you'll def. get flamed for that one...

 

the flames will also pollute the air....so i doubt they will

 

and actually it has nothing to do with mobile emisions that are poluting the envrionment...

its the large population or people and cutting down trees...

trees eat this ****... when theya re gone... the polution comes...

 

Do your research on CAIs as well because alot of people find that they can actually hurt our Z(which is already breathing very well) with stock intake and exhaust.

 

the bad thing about CAI's for the z is them setting off CEL's... but...

from what i hear...

on the NISMO exaust.. if you put the air flow sensor bak on UPSIDE DOWN it doesnt... like onthe under side of the intake pipe

 

huh...you just confused me..whats CEL

should i put the intake in..or will it just cause me problems?

 

It probably won't but be aware taht it could. ALso be aware that you are paying for sound since it will do very little performance-wise unless you are FI. Also it will not pressurize air at speed like your stock one does.

 

CEL = Check Engine Light

 

My CEL hasnt come up since i put the intake on i have the nismo, it seems to be fine but thanx for the tip about puttin upside down cuz if i run into problems ill try that

 

OK... First off to explain a catalytic converter is to understand the name catalyze. Many byproducts that come out of the exhaust ports are harmful gases such as carbon monoxide. In what way can we change carbon monoxide into a less harmful product do you ask? In all cases it requires some sort of chemical reaction including the carbon monoxide and some sort of reactant to get the reaction to begin and form the less harmful gas if it is possible. Now considering the gasoline engine, a constant flow of harmful gases such as carbon monoxide is passing through the exhaust system and therefore there must be a constant flow of reactants to create a constant process of chemical reactions that will transform harmful gases like carbon monoxide into less harmful gases like carbon dioxide all the time.

Now it seems highly uneconomical to have a consumer continually buy reactants and gasoline so that they can go from point A to point B and pass emissions all at the same time. Which brings us back to the understanding of catalysis. From the dictionary it will say "a modification and especially increase in the rate of a chemical reaction induced by material unchanged chemically at the end of the reaction". The key point is a material that can induce a chemical reaction at a faster rate without having itself consumed in the process. The catalytic converter contains rare materials such as platinum and more that have the ability to act as a catalyst by inducing the chemical reactions of harmful gases such as carbon monoxide and have it transform into carbon dioxide without having the catalyst materials be consumed or changed. Therefore hypothetically speaking the catalytic converter should last forever but other factors play in such as exhaust temperature too high can melt away the catalytic material rendering the converter useless as time progresses as the material slowly disappears.

The efficiency of a catalytic converter is how much of the catalytic material is exposed to the exhaust stream for the chemical reaction rate. To produce a passing emission a certain amount of harmful gases must be catalyzed and turned into a less harmful gas. So the factor is how much surface area of the catalytic material can be exposed to the exhaust stream will determine its emission. Unfortunately the more restrictive the emission laws the more surface area must be exposed to the exhaust stream. More surface area exposed = more turbulence in the converter and unwanted backpressure resulting in loss of hp.

Sorry this is just a short definition of the catalytic converter didnt want to make it too long.

As for the statement above it is correct that trees do eat this ****. But in all honesty even if all the trees were still present before we cut down trees our rate of carbon disposal into the atmosphere would still outweigh the rate at which trees or other organisms that use photosynthesis absorbs carbon dioxide. We have upset the balance of the carbon cycle by extracting carbon deposits deep in the ground like fossil fuels that are there for a reason and putting them into the atmosphere at a rate that nature cannot keep up. So cutting down trees is not the sole reason why there is pollution, it is also mainly because of our use of fossil fuels. Hence the vast fields of organic chemistry, carbon will never disappear but upsetting the carbon cycle = pollution.