High Flow Catalytic Converter - Toyota Yaris Forums

nisyota · 05-08-2009, 03:43 AM

Has anyone installed one? If so, what kind and did it improve any performance, like mpg :D ?

I want to install the set-up like Marcus with his magnaflow... they sound nice and its not too loud... I like to have a nice smooth exhuast... :D

PETERPOOP · 05-08-2009, 03:48 AM

i have one. it's a magnaflow 2.25" hi flow cat. 12" long. used it to quiet down my header back exhaust, and it did. however, i only have the hiflow cat and a 18" resonator. can't help ya with any info for the mpg department.

http://www.jegs.com/i/Magnaflow/642/54305/10002/-1

severous01 · 05-08-2009, 11:22 AM

you should look into random tech cat's. it's a pipe...that catalyzes the exhaust. its just like a straight pipe, only emissions legal.

fuji · 05-08-2009, 05:18 PM

I thought changing the cat converter was illegal. Is there any way to do it legally or does it even matter?

Tamago · 05-08-2009, 05:23 PM

Quote:

Originally Posted by fuji

I thought changing the cat converter was illegal. Is there any way to do it legally or does it even matter?

each state varies.

it's illegal to remove a cat from your vehicle, but if you replace it with another cat you may be in the clear. if your state does not do emissions testing then you're definitely in the clear. i'm running a magnaflow spun cat as well.

gwasabi · 05-08-2009, 06:13 PM

In Hawaii, Not having a cat is Illegal. Replacing it is not. WE don't have Emission testing though...

fuji · 05-09-2009, 03:47 AM

What are the benefits of changing the cats - more horsepower?

Sabretooth · 05-09-2009, 04:23 AM

High flow Cat > OEM Cat

main thing is being able to be legal when it comes to state testing...and doing your part in being more green.

If you want more horses, go straight pipe to muffler. BUT you will no longer pass any state inspections or testing, and you can get popped my local law enforcement if they check to see if you have done a cat delete.

YarisSedan · 05-09-2009, 04:38 AM

High flow cat isnt really even a cat its just a strait pipe that has catalist around the inside it maybe has 5-10 percent of catalist that a normal cat would have. Also is not smog legal anywhere.

eric81 · 05-09-2009, 04:28 PM

No one said if they had or even noticed any power increase. Or even if it maybe just helped the engine rev up a little quicker.

AlexNet0 · 05-09-2009, 05:22 PM

Well, Maine has no smog testing or emissions test at all, so that would be sweet for custom

severous01 · 05-09-2009, 11:01 PM

Quote:

Originally Posted by YarisSedan

High flow cat isnt really even a cat its just a strait pipe that has catalist around the inside it maybe has 5-10 percent of catalist that a normal cat would have. Also is not smog legal anywhere.

wanna bet??? i had better emissions on my camaro with the random tech than oem.

blacksandiegovitz · 05-09-2009, 11:53 PM

Quote:

Originally Posted by fuji

What are the benefits of changing the cats - more horsepower?

I dont have any dyno numbers but when I installed my nitto mid-pipe with "cat delete" I could feel a slight differnce , mabey good for 1-3 real hp's .

nisyota · 05-12-2009, 03:37 AM

you guys are also installing 2.25" pipes on these cars? But isn't 2.25" a little too big? Whats the stock diameter of the exhaust pipes?

PETERPOOP · 05-14-2009, 04:15 AM

I am running 2.25" from the header back; but i have the blitz s/c kit.

sf180th · 05-14-2009, 04:30 AM

Quote:

Originally Posted by nisyota

you guys are also installing 2.25" pipes on these cars? But isn't 2.25" a little too big? Whats the stock diameter of the exhaust pipes?

1.75"

nisyota · 05-14-2009, 11:12 AM

Quote:

Originally Posted by sf180th

1.75"

thanks...

YarisSedan · 05-14-2009, 02:33 PM

Quote:

Originally Posted by severous01

wanna bet??? i had better emissions on my camaro with the random tech than oem.

Sorry but putting something in that has lower catalist efficiency and less catalist will not magically make the emissions out of the tail pipe cleaner.

Its called the law of common sense. Now if its on a car that has already extremely clean emsisions and you delete the cat you may not see much change in emissions but definately wont see a improvement.

05-08-2009, 03:43 AM	#1
nisyota Drives: 2007 Toyota Yaris Sedan Join Date: Feb 2009 Location: Orlando, USA Posts: 73	High Flow Catalytic Converter Has anyone installed one? If so, what kind and did it improve any performance, like mpg :D ? I want to install the set-up like Marcus with his magnaflow... they sound nice and its not too loud... I like to have a nice smooth exhuast... :D

05-08-2009, 06:13 PM	#6
gwasabi View User's Garage Drives: 07 Blazing Blue LB Join Date: Jun 2007 Location: Honolulu, Hawaii Posts: 692	In Hawaii, Not having a cat is Illegal. Replacing it is not. WE don't have Emission testing though... __________________ Most Satisfying Crew Serious Business... MunkyWurks Garage - 8088488794

05-09-2009, 04:23 AM	#8
Sabretooth 37HSSV View User's Garage Drives: '11 Mazdaspeed 3 Join Date: Jan 2007 Location: St Cloud FL Posts: 1,395	High flow Cat > OEM Cat main thing is being able to be legal when it comes to state testing...and doing your part in being more green. If you want more horses, go straight pipe to muffler. BUT you will no longer pass any state inspections or testing, and you can get popped my local law enforcement if they check to see if you have done a cat delete. __________________ 07 Toyota Yaris Hatchback -sold- 11 Mazdaspeed 3 -SRI/TIP, 3 inch TBI, Custom FMIC, Tuned by Cobb Accessport, HKS ssq2 BOV, Upgraded HPFP- Clean stock look... Killer performance.

05-09-2009, 04:38 AM	#9
YarisSedan Drives: 08 Yaris Sedan Join Date: Oct 2008 Location: California - Bay Area Posts: 2,773	High flow cat isnt really even a cat its just a strait pipe that has catalist around the inside it maybe has 5-10 percent of catalist that a normal cat would have. Also is not smog legal anywhere. __________________ http://www.cardomain.com/ride/3210549

05-09-2009, 05:22 PM	#11
AlexNet0 View User's Garage Drives: '07 Yaris 3dr Join Date: Nov 2008 Location: Rockland, ME Posts: 1,638	Well, Maine has no smog testing or emissions test at all, so that would be sweet for custom __________________ ---------- MI-YW ----------

05-08-2009, 03:48 AM	#2
PETERPOOP View User's Garage Drives: 08 white liftback Join Date: Oct 2008 Location: Oahu Posts: 3,674	i have one. it's a magnaflow 2.25" hi flow cat. 12" long. used it to quiet down my header back exhaust, and it did. however, i only have the hiflow cat and a 18" resonator. can't help ya with any info for the mpg department. http://www.jegs.com/i/Magnaflow/642/54305/10002/-1

05-08-2009, 11:22 AM	#3
severous01 Drives: 2008 yaris, stripped, red Join Date: Jan 2009 Location: SE Texas Posts: 977	you should look into random tech cat's. it's a pipe...that catalyzes the exhaust. its just like a straight pipe, only emissions legal.

05-08-2009, 05:18 PM	#4
fuji Drives: Polar White Yaris HB Join Date: Dec 2008 Location: Honolulu Posts: 263	I thought changing the cat converter was illegal. Is there any way to do it legally or does it even matter?

05-09-2009, 03:47 AM	#7
fuji Drives: Polar White Yaris HB Join Date: Dec 2008 Location: Honolulu Posts: 263	What are the benefits of changing the cats - more horsepower?

05-09-2009, 04:28 PM	#10
eric81 View User's Garage Drives: Toyota Salesman Join Date: Nov 2008 Location: Clarksville, IN Posts: 297	No one said if they had or even noticed any power increase. Or even if it maybe just helped the engine rev up a little quicker.

05-12-2009, 03:37 AM	#14
nisyota Drives: 2007 Toyota Yaris Sedan Join Date: Feb 2009 Location: Orlando, USA Posts: 73	you guys are also installing 2.25" pipes on these cars? But isn't 2.25" a little too big? Whats the stock diameter of the exhaust pipes?

05-14-2009, 04:15 AM	#15
PETERPOOP View User's Garage Drives: 08 white liftback Join Date: Oct 2008 Location: Oahu Posts: 3,674	I am running 2.25" from the header back; but i have the blitz s/c kit.

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