Exhaust I have a cat question...

My92cashtrap

Member

May 11, 2019

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Holland MI

Jul 17, 2019

#1

• Jul 17, 2019

• #1

My 92 LX has a 347, LT headers, H-pipe, Flowmasters. When I purchased the car the PO had already deleted all the smog stuff (TF heads).

I do not like running with out catalytic convertors, but do not know how effective they'll be without the smog stuff.

Will they be effective to some degree if I add a catted X or H pipe?

 

General karthief

wonder how much it would cost to ship you a pair

5 Year Member

Aug 25, 2016

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polk county florida

Jul 17, 2019

#2

• Jul 17, 2019

• #2

Yes.

 

RaggedGT

Been here over a DECADE and still no CT

Mod Dude

Jul 20, 2014

4,735

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Taylorsville ky

Jul 17, 2019

#3

• Jul 17, 2019

• #3

And will kill some of that Stank lol

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

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Jul 18, 2019

#4

• Jul 18, 2019

• #4

But may be short lived without the air pump....


Or may be fine for a decade. All depends on how your engine runs

 

My92cashtrap

Member

May 11, 2019

53

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Holland MI

Jul 18, 2019

#5

• Jul 18, 2019

• #5

Mustang5L5 said:

But may be short lived without the air pump....


Or may be fine for a decade. All depends on how your engine runs

Click to expand...

After I finish adding a few things engine wise I'm gonna take it for a dyno tune. Hopefully it'll run clean enough to keep the cats happy...

 

87_LX_5.0

Active Member

Aug 24, 2010

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Uniontown, PA

Jul 18, 2019

#6

• Jul 18, 2019

• #6

Mustang5L5 said:

But may be short lived without the air pump....


Or may be fine for a decade. All depends on how your engine runs

Click to expand...

Correct me if I am wrong, but aren’t modern high flow cats able to work as intended without the thermactor?

 

General karthief

wonder how much it would cost to ship you a pair

5 Year Member

Aug 25, 2016

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polk county florida

Jul 18, 2019

#7

• Jul 18, 2019

• #7

87_LX_5.0 said:

Correct me if I am wrong, but aren’t modern high flow cats able to work as intended without the thermactor?

Click to expand...

Yes but they are designed for a more efficient burning engine. The computers in modern cars control more stuff going into the combustion chamber.

 

nickyb

I gotta say i never painted my nuts, Never Ever

15 Year Member

Apr 3, 2009

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nevada

Jul 18, 2019

#8

• Jul 18, 2019

• #8

I like dogs better than cats,sorry.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,216

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Massachusetts

Jul 18, 2019

#9

• Jul 18, 2019

• #9

87_LX_5.0 said:

Correct me if I am wrong, but aren’t modern high flow cats able to work as intended without the thermactor?

Click to expand...

They are, but modern engines also burn much cleaner not requiring the air pump system.

Can only do so much sticking a modern cat on an old engine

 

marcelo

Active Member

Feb 25, 2018

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Quepos, Costa Rica, Central America

Jul 20, 2019

#10

• Jul 20, 2019

• #10

Flowmasters... View: https://www.youtube.com/watch?v=_hREmy9mEvs


I run two of these and all fine...i have all Smog stuff deleted..

 

Reactions: My92cashtrap

My92cashtrap

Member

May 11, 2019

53

13

18

Holland MI

Jul 20, 2019

#11

• Jul 20, 2019

• #11

Thanks!