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to keep the cat or not?

Old 12-16-2011, 12:51 PM
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Default to keep the cat or not?

So going through other posts and trying to figure out what I want for exhaust im still up in the air. I was thinking of just cutting muffler off and putting a glass pack but now idk if I want to cut the cat off too, im in Montana so no need for a cat should I just cut it off and put a glasspack on there?
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Old 12-16-2011, 01:01 PM
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What exactly are you planning to do with this?

Is the stock exhaust shot?

I can go ahead and tell you that you'll hate listening to a glasspack all the time. Not to mention I'll hate you for making me listen to it.
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Old 12-16-2011, 01:02 PM
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prepare to be harassed endlessly... there is a forum rule thingy that you are not supposed to talk about cutting out your cat because of legality issues and blahblah...
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Old 12-16-2011, 01:05 PM
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^^^^ ya they blew me up in pm's telling me to stop.......
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Old 12-16-2011, 01:57 PM
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So no more cutting the cat... just need an idea for the cheapest best sounding muffler
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Old 12-16-2011, 02:06 PM
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Oh for gods sake. There's no laws against killing a cat in Montana.


If you want it to sounds good go find yourself a welded Thrush muffler. They're the same thing as a Flow Master and sound just as good.

Make sure you keep the tail pipe all the way out the back or you'll want to shoot yourself while driving down a long stretch of road.
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Old 12-16-2011, 02:45 PM
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I just did thrush muffler $40 at auto zone and its sounds great. Doing the exhaust tip this weekend.
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Old 12-16-2011, 03:11 PM
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I'm pretty sure that federal law states that you can't remove the cat or other emissions reducing devices.
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Old 12-16-2011, 03:20 PM
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Federal law is over-rated.
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Old 12-16-2011, 03:27 PM
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Even if Montana doesn't have law regarding catalytic converters, you are still bound by federal law because your XJ has the capability to travel state to state.

Federal law as stated above prohibits the removal of a catalytic converter except to be replaced by a comparable unit.

While some people in the thread my think nothing of ignoring federal law, you can incur a very large fine if you are caught running without a CC even in Montana.
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Old 12-16-2011, 04:26 PM
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Originally Posted by lowrange2
Federal law is over-rated.
FTW
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Old 12-16-2011, 04:32 PM
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Keep talking about taking off the cats, and this thread will be closed within the next like 30 minutes lol
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Old 12-16-2011, 04:49 PM
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Originally Posted by xjsnake
Even if Montana doesn't have law regarding catalytic converters, you are still bound by federal law because your XJ has the capability to travel state to state.

Federal law as stated above prohibits the removal of a catalytic converter except to be replaced by a comparable unit.

While some people in the thread my think nothing of ignoring federal law, you can incur a very large fine if you are caught running without a CC even in Montana.
Yes. At no time may state override Federal or FMVSS standards. Like my old exhaust was 89db, Federal law states 91db or less to be street legal. When an officer tried to give me a ticket, I took it to court and showed I was within Federal regulations. They dropped my ticket. State law may only improve upon Federal basis/laws but not ignore or undermine them. So please no more cat removal talk, its pointless and irresponsible.
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Old 12-17-2011, 12:15 AM
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Cut the cat get glasspack done!
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Old 12-17-2011, 12:42 AM
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Originally Posted by xjsnake
Even if Montana doesn't have law regarding catalytic converters, you are still bound by federal law because your XJ has the capability to travel state to state.

Federal law as stated above prohibits the removal of a catalytic converter except to be replaced by a comparable unit.

While some people in the thread my think nothing of ignoring federal law, you can incur a very large fine if you are caught running without a CC even in Montana.
*if a federal officer decides to look under your car. I'm catless in Cali and I pass smog and have been pulled over and no problem its all good.
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