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Dual cat questions:

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Old Oct 3, 2003 | 01:41 PM
  #1  
anesthes's Avatar
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Joined: Jul 1999
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From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Dual cat questions:

Hi Guys,

On the factory dual cat setup:

1) What is the size of the pipes going INTO the cats
2) What is the size goign out (prolly same)
3) What is the size of the Y-pipe into the intermediate
4) Is the intermediate the same as a single cat system, or ?

And if anyone has a really nice picture that'd be great! I'm thinking of instead of running a 3" cat to my 3" exhaust, runing dual cats. But I wanna make sure the dual cat setup is 3".

-- Joe
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Old Oct 4, 2003 | 01:51 PM
  #2  
MdFormula350's Avatar
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From: Maryland; USA
1) What is the size of the pipes going INTO the cats

2 1/4 i measure thats the size of my slp y-pipe which is just the stock size buy stainless.

2) What is the size goign out (prolly same)

yeah 2 1/4 coming out then right into the f-pipe which turns into 3 inch and then into the i-pipe.

3) What is the size of the Y-pipe into the intermediate

i call it f-pipe, hooks up the two cat (2 1/4 pipe and goes into 3 inch)

4) Is the intermediate the same as a single cat system

i believe so, 3 inch and same size as single or dual cat system.


i posted pics of my stuff on this thread https://www.thirdgen.org/techbb2/sho...hreadid=203842
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