high flow cat
#1
Newbie
Thread Starter
Join Date: Mar 2009
Posts: 20
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
high flow cat
Just wondering how much difference a high flow cat would make on performance in my 01 cherokee. Is it worth the money and trouble and will it cause OBD codes ?
#2
Senior Member
Join Date: Aug 2008
Location: tan house white shutters key's under the flower pot
Posts: 971
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0
not worth it to me. and i've seen a lot of aftermarket cats cause codes, even if they say obd2 compliant. i'd spend my money elsewhere.
#5
Senior Member
Join Date: Aug 2008
Location: tan house white shutters key's under the flower pot
Posts: 971
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0
its probably more appealing to younger guys, i've outgrown throwing my money at that. and its not worth the hassle if you get one that starts causing emissions problems. i'd put the money elsewhere. if you wanna feel better power get some gears, build a stroker, thats what you will really notice.
everything else is in the same category to me. chips, cold air intakes, tb spacers, bored tb, exhaust and so on.
horespower numbers are all so inflated and over rated these days, every thing gives you more horsepower. most of it isn't really noticeable except for whats in your head. thats all i say. a new cat will give you more horsies, its just not something i focus on anymore.
everything else is in the same category to me. chips, cold air intakes, tb spacers, bored tb, exhaust and so on.
horespower numbers are all so inflated and over rated these days, every thing gives you more horsepower. most of it isn't really noticeable except for whats in your head. thats all i say. a new cat will give you more horsies, its just not something i focus on anymore.
#7
CF Veteran
Join Date: Mar 2009
Location: Tenn. and Mich.
Posts: 28,068
Likes: 0
Received 6 Likes
on
6 Posts
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
I had a high performance cat installed on my '97 ZJ w/5.2 over a year ago at my friends exhaust shop. Both O2 sensors were retained. No other changes were made at the time. It passed the AET test and hasn't set any codes yet. I could definitely hear and feel the difference right away.
Last edited by ol"blue; 03-31-2009 at 10:16 PM.
Trending Topics
#8
::CF Administrator::
Join Date: May 2008
Location: Okc area
Posts: 10,039
Likes: 0
Received 15 Likes
on
11 Posts
Year: 1991
Model: Cherokee
Engine: 4.0 I6
its probably more appealing to younger guys, i've outgrown throwing my money at that. and its not worth the hassle if you get one that starts causing emissions problems. i'd put the money elsewhere. if you wanna feel better power get some gears, build a stroker, thats what you will really notice.
everything else is in the same category to me. chips, cold air intakes, tb spacers, bored tb, exhaust and so on.
horespower numbers are all so inflated and over rated these days, every thing gives you more horsepower. most of it isn't really noticeable except for whats in your head. thats all i say. a new cat will give you more horsies, its just not something i focus on anymore.
everything else is in the same category to me. chips, cold air intakes, tb spacers, bored tb, exhaust and so on.
horespower numbers are all so inflated and over rated these days, every thing gives you more horsepower. most of it isn't really noticeable except for whats in your head. thats all i say. a new cat will give you more horsies, its just not something i focus on anymore.
#10
Senior Member
Join Date: Aug 2008
Location: tan house white shutters key's under the flower pot
Posts: 971
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0
I do agree to a certain degree on ODBII jeeps but on oler ODBI you're not going to get any codes since the only O2 is pre-cat. Also on that list I agree with you 100% except with the bored TB, it won't add noticable HP but is more of a throttle response and if you have the tools to do it then it's worth the effort. To me it simple makes better use of the HP you have.
#11
Senior Member
Join Date: Jan 2009
Location: Seattle
Posts: 562
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
i got a high flow flowmaster cat and a straight through s type flowmaster muffler, it sounds ok not loud just throuty, but the cat was like a fourth of the size of the OEM cat, i only bout that stuff cuz it was so cheap were i work.
#12
CF Veteran
Join Date: Jan 2008
Location: LI, NY
Posts: 3,671
Likes: 0
Received 8 Likes
on
8 Posts
Year: 1998
Model: Cherokee
Engine: 4.0, bolt ons for days...
its probably more appealing to younger guys, i've outgrown throwing my money at that. and its not worth the hassle if you get one that starts causing emissions problems. i'd put the money elsewhere. if you wanna feel better power get some gears, build a stroker, thats what you will really notice.
everything else is in the same category to me. chips, cold air intakes, tb spacers, bored tb, exhaust and so on.
horespower numbers are all so inflated and over rated these days, every thing gives you more horsepower. most of it isn't really noticeable except for whats in your head. thats all i say. a new cat will give you more horsies, its just not something i focus on anymore.
everything else is in the same category to me. chips, cold air intakes, tb spacers, bored tb, exhaust and so on.
horespower numbers are all so inflated and over rated these days, every thing gives you more horsepower. most of it isn't really noticeable except for whats in your head. thats all i say. a new cat will give you more horsies, its just not something i focus on anymore.
#13
Senior Member
Join Date: Aug 2008
Location: tan house white shutters key's under the flower pot
Posts: 971
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0
i've made a ton of money off people putting that stuff on their cars. even the aftermarkets that say obd2 compliant can cause problems. then the customers are pissed cuz they spent a bunch of money on something that has to be redone.
#14
CF Veteran
Join Date: Jan 2008
Location: LI, NY
Posts: 3,671
Likes: 0
Received 8 Likes
on
8 Posts
Year: 1998
Model: Cherokee
Engine: 4.0, bolt ons for days...
i guess i'm smoking years of experience, and redoing the cheap "valesquez muffler shop" cats, and aftermarket "performance" cats, cuz they won't pass emissions, and thorwing codes.
i've made a ton of money off people putting that stuff on their cars. even the aftermarkets that say obd2 compliant can cause problems. then the customers are pissed cuz they spent a bunch of money on something that has to be redone.
i've made a ton of money off people putting that stuff on their cars. even the aftermarkets that say obd2 compliant can cause problems. then the customers are pissed cuz they spent a bunch of money on something that has to be redone.
Thread
Thread Starter
Forum
Replies
Last Post
libengan
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
14
11-06-2015 09:16 AM
Voyager2
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
09-28-2015 04:23 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)