post #1 of Old 10-24-2013, 11:16 PM Thread Starter
lokithecoyote
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1996 XJ Cherokee 
 
Join Date: Oct 2013
Location: Rockville
Posts: 28
Intermediate Exhaust Pipe Sizing - Does it Matter?

So, I recently replaced my intermediate exhaust pipe with an Omix-Ada that was basically the same shape and size as the stock pipe. I know that some degree of back pressure is necessary for proper flow, but I was disappointed that I could not find an exhaust with a larger (2.25") diameter. I would like to add one in the future, but my question is: will it make a difference? I have a cold air intake, JBA exhaust headers, and a MagnaFlow performance exhaust, but also a stock intake manifold and throttle body, and a stock catalytic converter...will the exhaust pipe diameter matter without the other factors replaced?

Thanks.


The time you enjoy wasting is not wasted time.

"Kit Fox" build - 1996 XJ Sport
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post #2 of Old 10-25-2013, 12:08 AM
cory4um
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1999 XJ Cherokee 
 
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I believe the saying is " a chain is only as strong as its weakest link", and this applies here.

Adding "pieces" as you go should help some. But to get full potential out of your system, you should upgrade from the filter to the tailpipe..

As for your more technical question,.i can't help. Its been ages since i researched on the exhaust system and aftermarket availability..
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post #3 of Old 10-26-2013, 11:42 AM
cruechief
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www.performance-curve.com for all your exhaust needs

98 XJ 4 1/2 RE on 32" big at
04 WJ limited v8
13 WK2 Overland 5.7
97 tj-Sold
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post #4 of Old 10-27-2013, 06:22 PM Thread Starter
lokithecoyote
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Join Date: Oct 2013
Location: Rockville
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Quote:
Originally Posted by cruechief View Post
www.performance-curve.com for all your exhaust needs
Not terribly helpful since I already have exhaust parts installed and I was looking for further technical information.

The time you enjoy wasting is not wasted time.

"Kit Fox" build - 1996 XJ Sport
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post #5 of Old 10-27-2013, 07:47 PM
cruechief
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98 XJ 4 1/2 RE on 32" big at
04 WJ limited v8
13 WK2 Overland 5.7
97 tj-Sold
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post #6 of Old 10-28-2013, 08:12 AM
chris87xj
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1987 XJ Cherokee 
 
Join Date: Sep 2006
Location: 3rd rock from sun
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Quote:
Originally Posted by lokithecoyote View Post
So, I recently replaced my intermediate exhaust pipe with an Omix-Ada that was basically the same shape and size as the stock pipe. I know that some degree of back pressure is necessary for proper flow, but I was disappointed that I could not find an exhaust with a larger (2.25") diameter. I would like to add one in the future, but my question is: will it make a difference? I have a cold air intake, JBA exhaust headers, and a MagnaFlow performance exhaust, but also a stock intake manifold and throttle body, and a stock catalytic converter...will the exhaust pipe diameter matter without the other factors replaced?

Thanks.
Try posting your question here loki: My goal is 25+ mpg in my 99 XJ
Those guys will likely be happy to give you some helpful on-topic discussion of this subject.

***Chris***

"You can set my jeep on fire and roll it down a hill,
But I still wouldn't trade it for a Coupe DeVille."


JeepForum.com/IndyORV@Redbird-SRA

COTY 2009

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