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 08:12 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....
12-22-2008 06:37 AM
Originally Posted by coyote_94yj
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.