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Topic Review (Newest First)
12-22-2008 07:37 AM
Neil F.
Originally Posted by coyote_94yj View Post
If gutting your cat will cause your jeep to not pass inspection, chances are a highflow cat will do the same thing.
Not true. Myself and many, many others have used high flow cats and they will pass emissions. I have them on my Mustang with a nicely modified engine and non emission friendly cam and it passes the roller test in NJ.

Would I bother putting them on the Jeep......NO.
12-21-2008 09:12 PM
Magnaflow + Flowmaster Super44 = Awesome

I had to replace my complete exhaust system - rusted badly...

I purchased the Magnaflow Cat, with downpipe (for '97 4.0 TJ) plus the Flowmaster Super44 Muffler with tailpipe from an ebay vendor (performance-curve). The downpipe and cat are stainless and fit perfectly. The Super44 fit fine, but the tailpipe took a little 'manipulating' to finally get it installed.

I am extremely happy with both the sound AND the performance. No regrets. The Super44 is extremely rugged as I have bashed it on the rocks several times with no affect (except for dislodging the hanger from the tail pipe).

We don't have inspection here in Alabama, so I can't say what the results of the exhaust breath-a-lyzer would be....
12-21-2008 07:01 PM
JJSyclone1128 Gutting a cat can be worse for flow, it creates all kinds of turbulence in the chamber and actually decreases exhaust flow. Sounds cool though lol
12-21-2008 05:11 PM
Jrzymilitia this is kind of what I was thinking...

Magnaflow Direct-fit Catalytic Converters : JC Whitney: Auto Parts & Accessories
12-21-2008 05:06 PM
Jerry Bransford Low flow cats sound great in theory but in reality, they don't help. Reducing the designed-in backpressure of an exhaust system can often actually cause a loss of power, not a gain.
12-21-2008 04:55 PM
Jrzymilitia Hey triple I was looking on ebay but I cant find one..Can u link one please
12-21-2008 04:53 PM
Jrzymilitia Well I was runing a straight pipe to it and failed inspection for it..So im assuming Punching out a cat would just be the same thing. I failed For emissions
12-21-2008 03:48 PM
Giancarlo yeah most new wranglers have 2 to 3 cats anyways
12-21-2008 03:45 PM
Originally Posted by Jrzymilitia View Post
Wish I could Gut it out...but Jersey laws suck
If gutting your cat will cause your jeep to not pass inspection, chances are a highflow cat will do the same thing.
12-21-2008 03:40 PM
Giancarlo i live in jersey too..
12-21-2008 01:34 PM
Originally Posted by flattietj View Post
no.....2hp is not worth 600 bucks
600? where the hell do YOU buy them?

the last time i checked ebay, they were like 40 bucks more expensive than regular.

every person on here that has installed one says its definitely noticeable

how will Jersey law know if u gut it out? Or do they still do the tailpipe sniffer test?
12-21-2008 12:57 PM
Jrzymilitia Wish I could Gut it out...but Jersey laws suck
12-20-2008 05:40 PM
Giancarlo just gut ur cat
12-20-2008 12:09 AM
flattietj no.....2hp is not worth 600 bucks
12-19-2008 10:17 PM
High Flow Cat..

Do you Think its worth what the cost?

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