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2ZZ: Best option for high flow catalytic converter

2zz exhaust

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#1 nlaplante

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Posted 09 July 2012 - 10:09 PM

What are the best options for a 2ZZ high flow catalytic converter? Car is a 2005 Corolla XRS.

I've heard Magnaflow were good options. Any opinions?

Car already has the Magnaflow 15807 cat-back exhaust installed.
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#2 gte

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Posted 10 July 2012 - 08:44 PM

Punching it out and putting a pipe inside of it to keep reversion from occurring.
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#3 808IndigoInkXRS

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Posted 10 July 2012 - 11:22 PM

Just run no cat
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#4 My05xrsrolla

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Posted 11 July 2012 - 12:26 PM

Well are u going for power Cus u might have to go with bigger pipeping Cus I had that one the decided to got with custome mag cat less when I got my header

#5 dmsyr

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Posted 11 July 2012 - 12:38 PM

Catless - The only downfall is that it will STINK LIKE HELL!!! lol. But Magnaflow is the preferred option. Actually, any 2.5 High-Flow cat will do.

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#6 SuperCollasus

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Posted 11 July 2012 - 07:29 PM

MagnaFlow cats don't last. Do your research.

When I was doing mine on NGC post after post was how poorly MagnaFlow did.

I run 2.5" from the EM back. I went with an Emico Catalytic converter from Majestic Muffler in Scarborough. Frank and his team have done an excellent job and I passed Emmisions this year with flying colours.

I wouldn't run without a Car IMO. Bad for your health and bad for the environment.

Check out Random Technology Catalytic convertors if you need " high flow."
2005 Toyota Corolla XRS

#7 dominick

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Posted 27 July 2012 - 05:10 PM

MagnaFlow cats don't last. Do your research.

When I was doing mine on NGC post after post was how poorly MagnaFlow did.

I run 2.5" from the EM back. I went with an Emico Catalytic converter from Majestic Muffler in Scarborough. Frank and his team have done an excellent job and I passed Emmisions this year with flying colours.

I wouldn't run without a Car IMO. Bad for your health and bad for the environment.

Check out Random Technology Catalytic convertors if you need " high flow."


do you have a site post for us to contact so we can get this high flow cat? show us where to go?

#8 LBC_Corolla

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Posted 06 March 2013 - 07:27 AM

What good brand hi flow cat do you guys have? Im looking to replace my cheap dead magnaflow hi flow cat.
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#9 SuperCollasus

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Posted 08 March 2013 - 12:12 AM

do you have a site post for us to contact so we can get this high flow cat? show us where to go?


Don't bother. The CAT was burnt out in less than 9 months. Bulls***. The only brand I'm willing to try next is a GESi 2.5". @ $450+ its supposed to be a high quality option. Made by Vibrant. This will be my forth CAT is over 3-1/2 years.
2005 Toyota Corolla XRS

#10 hughesjasonk

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Posted 08 March 2013 - 12:26 AM

i trust dynomax and walker
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#11 Epic4g

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Posted 08 March 2013 - 11:15 AM

How do you know if your cat doesn't work? I have ppe headers and high flow cat...what are the signs of a broken cat?

#12 SuperCollasus

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Posted 09 March 2013 - 06:23 PM

There's over a 100 degree difference between the inlet of the CAT and the exit. The front being hotter than the back. I can't remember the temp tho. LoL
2005 Toyota Corolla XRS

#13 burnt_toast

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Posted 07 July 2013 - 05:59 AM

so random technology cats are no good? is there any bolt on aftermarket cat options?
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