Another high flow cat query
07-17-2013, 06:01 AM
#1
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Year: 1999
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Another high flow cat query
I have researched this and appear to get mixed messages.
I need to replace my Factory cats - hoping for more throttle response / consumption with a new Cat...but high flow or a normal one?
I do know the high flow ones have a larger diam to allow for the gases to pass quicker....but is it really going to make a difference over a new regular cat?
I know which ever one I get, it will make a difference from the one on mine now which has been there since 1999.
Some say yes it will, some say is all BS?
Im thinking just get a Walker or a Flowmaster hi flow cat?
I need to replace my Factory cats - hoping for more throttle response / consumption with a new Cat...but high flow or a normal one?
I do know the high flow ones have a larger diam to allow for the gases to pass quicker....but is it really going to make a difference over a new regular cat?
I know which ever one I get, it will make a difference from the one on mine now which has been there since 1999.
Some say yes it will, some say is all BS?
Im thinking just get a Walker or a Flowmaster hi flow cat?
07-17-2013, 07:16 AM
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Year: '99 and '91
Model: Cherokee
Check out:
www.performance-curve.com
They have good prices on hi flow cat converters. That way you can get hi-flow and don't have to shell out a ton of cash.
www.performance-curve.com
They have good prices on hi flow cat converters. That way you can get hi-flow and don't have to shell out a ton of cash.
07-17-2013, 08:14 AM
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Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
The original poster is a Kiwi, they may have a whole bunch of different brands availible to them...or not.
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07-17-2013, 08:19 AM
#8
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Year: 1999
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Engine: 4.0L OBD-II
For what it's worth, some of the hits I found for that P/N were on eBay at the dame price as US stores. May get a decent deal on shipping... hopefully not via Drop Bear Express
07-17-2013, 10:14 AM
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Year: 1994
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Engine: 4.0 L/242 CID I-6 High Output MFI
I read an article on high-flow cats, straight piping, and OEM cats on HOT ROD or something like that. They tested with a 145 hp L4 engine. IIRC, they gained 7 hp total going from OEM cat to straight pipe, and about 4 hp with a Magnaflow hi-flow cat. So, the upgraded kitties definitely help, but you may not notice the horsepower gain unless you open up the exhaust from the headers out.
07-17-2013, 10:22 AM
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Year: 1997, 1993
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I have researched this and appear to get mixed messages.
I need to replace my Factory cats - hoping for more throttle response / consumption with a new Cat...but high flow or a normal one?
I do know the high flow ones have a larger diam to allow for the gases to pass quicker....but is it really going to make a difference over a new regular cat?
I know which ever one I get, it will make a difference from the one on mine now which has been there since 1999.
Some say yes it will, some say is all BS?
Im thinking just get a Walker or a Flowmaster hi flow cat?
I need to replace my Factory cats - hoping for more throttle response / consumption with a new Cat...but high flow or a normal one?
I do know the high flow ones have a larger diam to allow for the gases to pass quicker....but is it really going to make a difference over a new regular cat?
I know which ever one I get, it will make a difference from the one on mine now which has been there since 1999.
Some say yes it will, some say is all BS?
Im thinking just get a Walker or a Flowmaster hi flow cat?
The OP originally said "cats". I'm wondering if the NZ XJ's have the California style emissions with the small precats as well.
Clarify please OP?
07-17-2013, 03:05 PM
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