De-cat exhaust system - Page 4 - Toyota Yaris Forums

fmicle · 10-27-2009, 07:27 PM

Quote:

Originally Posted by ddongbap

Don't forget that cows also fart.

Mouse · 10-28-2009, 11:45 AM

And people also breathe

fmicle · 10-28-2009, 12:41 PM

While I agree that buses, trucks and factories pollute more, there are simply so many automobiles, that their impact cannot be negligible.

Clean and super-green countries such as Austria and Switzerland have speed limits on the Autobahn (Freeway) to limit pollution first and foremost. Germany is the only country I know of that has no speed limits on the Autobahn, but that's because the Auto industry is big and has a powerful lobby.

Mouse · 10-28-2009, 05:15 PM

There are speed limits on the Autobahn in Germany in congested areas. It's mostly parts of the Autobahn that are in the country side that do not have a speed limit.

fmicle · 10-28-2009, 07:39 PM

Quote:

Originally Posted by Mouse

There are speed limits on the Autobahn in Germany in congested areas. It's mostly parts of the Autobahn that are in the country side that do not have a speed limit.

I lived in Germany from 2000 until 2004 before moving to California

Usually, around every Autobahn exit (Ausfahrt) the speed limit is 120 km/h. Most mass produced vehicles are electronically limited to 250 km/h mainly for insurance purposes, except for sport cars and high-end models (which are much more expensive to insure of course). The German traffic laws recommend a maximum speed of 130 km/h and some insurances won't pay damages if the accident happened above this speed.

Additionally, any mechanical changes to the car must be approved by TUV and listed on the registration papers otherwise they void the insurance.

Marfulion · 10-28-2009, 08:42 PM

Quote:

Originally Posted by YarisPR

My dad used my Yaris (1 cat removed) to get the inspection of his Z3 (it doesn't pass inspection do to emissions) and my Yaris passed

And Yes, emissions laws here are easily bend / broken / worked around LOL

that cus all you have to do is fork over some mofongo and your good to go

fmicle · 10-28-2009, 10:15 PM

Quote:

Originally Posted by YarisPR

My dad used my Yaris (1 cat removed) to get the inspection of his Z3 (it doesn't pass inspection do to emissions) and my Yaris passed

And Yes, emissions laws here are easily bend / broken / worked around LOL

The California DMV caught about 7 smog check stations in the Bay Area (Santa Clara county) doing "clean piping" last week and removed their licenses...

YarisSedan · 10-28-2009, 11:53 PM

Couple things i noticed in this thread. A high flow cat basically is a hollow pipe with only about 5% of the catalist in a normal catalitic converter just coating the inside of it. It does really next to nothing to me its just a gimmic to make people feel better. How do you think oem cats cost about 500 dollars or more but those aftermarket high flow cats are as cheap as 50 bucks. Cause less expensive material used.

So your o2 sensor will still trigger a code for catalist threshold below efficiency P0420. Because your cat is less efficient the computer detects it and thinks there is a problem.

Also the amount of NOX produced by our car without a cat i would imagine is in the thosuands. Compared to one iwth a cat which would be maybe 50 or even zero. So that means the pollution your one yaris puts out is equivilent to 3000 yarises on the road that have cats. Just to put things in perspective to you.

advocate · 12-03-2009, 01:18 AM

Okay while the earth is good and we all love living, can we get back onto topic?

This has been posted in the performance section. No one cares about mother nature in this subforum. People care about... performance! So if you've de-cat'd and have a dyno or anything else about it that you'd like to add then add it!! We would love to read about some actual results, not opinions that belong in the political sub-forum.

BailOut · 12-03-2009, 01:38 AM

Quote:

Originally Posted by advocate

This has been posted in the performance section. No one cares about mother nature in this subforum.

It's just not that simple. When what you do has a negative, lasting impact on everyone in your region, it is a public act. You cannot put on such a public display and not expect feedback - much of it negative.

The air we breathe and the water we drink is much more important than some selfish person's baseless desire for more horsepower, no matter how you try to spin it.

advocate · 12-03-2009, 01:44 AM

Dude, cows farting ended this thread. Really.
http://en.wikipedia.org/wiki/Cows#Environmental_impact

There's probably hundreds of millions of them. And they fart all the time.
Edit: Wow there's over a billion. Gotta love In' N' Out!!
http://en.wikipedia.org/wiki/Cattle#Population

Plus, the world won't be lasting that much longer anyways, humans are on average too stupid. We care more about skin color and the languages people use to communicate instead of the fact that we are all made up exactly the same crap on the inside.
http://www.examiner.com/x-25013-Port...o-be-a-reality

Might as well enjoy life while it still exists.

aucorium · 12-04-2009, 01:15 AM

sjjoo , this topic has run away quite a bit , LOL !!

aucorium · 01-16-2010, 04:43 PM

anyone thats done a decat get a good power increase?

06silveryaris · 01-16-2010, 05:00 PM

The power gain will be very minimal if any these cars make little power to begin with. On a track car or turbo engine difrent story not the case for the Yaris. You will probably loose backpressure and will probably loose torque but make minimal hp at mid to top end

aucorium · 01-17-2010, 03:37 AM

Quote:

Originally Posted by 06silveryaris

The power gain will be very minimal if any these cars make little power to begin with. On a track car or turbo engine difrent story not the case for the Yaris. You will probably loose backpressure and will probably loose torque but make minimal hp at mid to top end

i spoke to one of the guys here in SA that did a yaris exhaust ,de-cat and header and they got a extra 9kw

aucorium · 01-17-2010, 03:41 AM

i dont think a cat can effect back pressure , but the boxes you use can.

Jacksonville · 01-22-2010, 10:57 AM

Quote:

Originally Posted by BailOut

Spoken like a true Texan.

Mind your Bunny Ranch... and dont be so quick to judge Texans.

GianniVRS · 02-04-2013, 06:53 AM

On my old Glanza 4EFTE 13cc, removing the cat was one of the first mods we used for high flow and the increase in engine response was noticeable. has anyone tried it on the 1NZFE N/A not turbo JDM (trd turbo m or any after market etc etc) ? on the Honda's with an uprated intake & Exhaust Mani + decat we do wonders, does our 1NZFE benefit ? (ok i know it is ilegal etc etc and it does harm etc etc)

10-28-2009, 11:53 PM	#62
YarisSedan Drives: 08 Yaris Sedan Join Date: Oct 2008 Location: California - Bay Area Posts: 2,773	Couple things i noticed in this thread. A high flow cat basically is a hollow pipe with only about 5% of the catalist in a normal catalitic converter just coating the inside of it. It does really next to nothing to me its just a gimmic to make people feel better. How do you think oem cats cost about 500 dollars or more but those aftermarket high flow cats are as cheap as 50 bucks. Cause less expensive material used. So your o2 sensor will still trigger a code for catalist threshold below efficiency P0420. Because your cat is less efficient the computer detects it and thinks there is a problem. Also the amount of NOX produced by our car without a cat i would imagine is in the thosuands. Compared to one iwth a cat which would be maybe 50 or even zero. So that means the pollution your one yaris puts out is equivilent to 3000 yarises on the road that have cats. Just to put things in perspective to you. __________________ http://www.cardomain.com/ride/3210549

12-04-2009, 01:15 AM	#66
aucorium AKA Samurai Racer Drives: Yaris 2006 Join Date: Jul 2006 Location: South Africa Posts: 834	sjjoo , this topic has run away quite a bit , LOL !! __________________ JDMtuner Import Performance Tuning www.jdmtuner.co.za

01-16-2010, 04:43 PM	#67
aucorium AKA Samurai Racer Drives: Yaris 2006 Join Date: Jul 2006 Location: South Africa Posts: 834	anyone thats done a decat get a good power increase? __________________ JDMtuner Import Performance Tuning www.jdmtuner.co.za

01-17-2010, 03:41 AM	#70
aucorium AKA Samurai Racer Drives: Yaris 2006 Join Date: Jul 2006 Location: South Africa Posts: 834	i dont think a cat can effect back pressure , but the boxes you use can. __________________ JDMtuner Import Performance Tuning www.jdmtuner.co.za

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10-28-2009, 11:45 AM	#56
Mouse Drives: 2007 MX5 Join Date: Feb 2009 Location: Miami, Fl. Posts: 338	And people also breathe

10-28-2009, 12:41 PM	#57
fmicle Drives: 2007 Yaris LB Join Date: Mar 2007 Location: San Jose, CA, USA Posts: 685	While I agree that buses, trucks and factories pollute more, there are simply so many automobiles, that their impact cannot be negligible. Clean and super-green countries such as Austria and Switzerland have speed limits on the Autobahn (Freeway) to limit pollution first and foremost. Germany is the only country I know of that has no speed limits on the Autobahn, but that's because the Auto industry is big and has a powerful lobby.

10-28-2009, 05:15 PM	#58
Mouse Drives: 2007 MX5 Join Date: Feb 2009 Location: Miami, Fl. Posts: 338	There are speed limits on the Autobahn in Germany in congested areas. It's mostly parts of the Autobahn that are in the country side that do not have a speed limit.

12-03-2009, 01:18 AM	#63
advocate Drives: car Join Date: Oct 2008 Location: location Posts: 1,033	Okay while the earth is good and we all love living, can we get back onto topic? This has been posted in the performance section. No one cares about mother nature in this subforum. People care about... performance! So if you've de-cat'd and have a dyno or anything else about it that you'd like to add then add it!! We would love to read about some actual results, not opinions that belong in the political sub-forum.

12-03-2009, 01:44 AM	#65
advocate Drives: car Join Date: Oct 2008 Location: location Posts: 1,033	Dude, cows farting ended this thread. Really. http://en.wikipedia.org/wiki/Cows#Environmental_impact There's probably hundreds of millions of them. And they fart all the time. Edit: Wow there's over a billion. Gotta love In' N' Out!! http://en.wikipedia.org/wiki/Cattle#Population Plus, the world won't be lasting that much longer anyways, humans are on average too stupid. We care more about skin color and the languages people use to communicate instead of the fact that we are all made up exactly the same crap on the inside. http://www.examiner.com/x-25013-Port...o-be-a-reality Might as well enjoy life while it still exists.

01-16-2010, 05:00 PM	#68
06silveryaris Drives: 2006 yaris Join Date: Oct 2008 Location: Puerto Rico Posts: 536	The power gain will be very minimal if any these cars make little power to begin with. On a track car or turbo engine difrent story not the case for the Yaris. You will probably loose backpressure and will probably loose torque but make minimal hp at mid to top end

02-04-2013, 06:53 AM	#72
GianniVRS View User's Garage Drives: JDM Vitz RS 2008 Join Date: Sep 2012 Location: Malta Posts: 31	On my old Glanza 4EFTE 13cc, removing the cat was one of the first mods we used for high flow and the increase in engine response was noticeable. has anyone tried it on the 1NZFE N/A not turbo JDM (trd turbo m or any after market etc etc) ? on the Honda's with an uprated intake & Exhaust Mani + decat we do wonders, does our 1NZFE benefit ? (ok i know it is ilegal etc etc and it does harm etc etc)