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Old 07-18-2015, 11:22 PM   #1
silverslug00
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Gut/punch a cat

Is this illegal in Texas? And who all has done this is something like it.
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Old 07-19-2015, 08:04 AM   #2
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Legal answer- it's illegal it alter or remove any emission control devise from any vehicle.


Real world answer- there are no emission tests/inspections for motorcycles (yet) in Texas. Even durring a visual inspection, the cat is located inside a pipe that you can't see. without a sniffer in the tailpipe, who is going to know?

I gutted the kitty on my FZ1 and to tell you the truth, my dyno didn't register at all. In theory, it should release some back pressure from the exhaust, resulting in better exhaust flow and lower EGT's, but how much, I have no idea. Cats flow very well these day verses 20 years ago.
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Old 07-19-2015, 09:09 AM   #3
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Guys running a de-catted header with a midpipe and slip on are getting similar results to those running full exhausts on zx6rs.

Its not easy but definitely worth it though.
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Old 07-19-2015, 10:17 AM   #4
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Quote:
Originally Posted by Schooley View Post
Guys running a de-catted header with a midpipe and slip on are getting similar results to those running full exhausts on zx6rs.

Its not easy but definitely worth it though.
^ this is true....
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Old 07-19-2015, 10:47 AM   #5
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Quote:
Originally Posted by Schooley View Post
Guys running a de-catted header with a midpipe and slip on are getting similar results to those running full exhausts on zx6rs.

Its not easy but definitely worth it though.
On the FZ8 forum that's what they came to after dyno a bike with fill exhaust and a bike with a gutted cat. I figured a gutted cat is cheaper than dropping 1k on a full exhaust.
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Old 07-19-2015, 11:25 AM   #6
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Old 07-19-2015, 11:32 AM   #7
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Quote:
Originally Posted by silverslug00 View Post
On the FZ8 forum that's what they came to after dyno a bike with fill exhaust and a bike with a gutted cat. I figured a gutted cat is cheaper than dropping 1k on a full exhaust.
You could always get a link pipe or an MJS header for super cheap. I don't know where the car is on that bike, but either if those two options would be cleaner, and they're both cheaper than a full system. Then you're going to have to factor in the cost of a proper tune. Don't just guy it and then go out and ride, chances are you're going to be running rich.
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Old 07-19-2015, 11:41 AM   #8
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Originally Posted by 40acres View Post
You could always get a link pipe or an MJS header for super cheap. I don't know where the car is on that bike, but either if those two options would be cleaner, and they're both cheaper than a full system. Then you're going to have to factor in the cost of a proper tune. Don't just guy it and then go out and ride, chances are you're going to be running rich.
My cat is right after all 4 pipes connect into one. It's just a bulbous part of the pipe. I'm wondering what options I have. I'd be down. For cutting the cat out and swapping it with a pipe.
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Old 07-19-2015, 11:44 AM   #9
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Check out MJS. Not sure if they have an option for your bike, but they take stock header, cut out that section, weld in a straight pipe and ceramic coat them for about $250. They also offer a core if you ship them your stock headers back.
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Old 07-19-2015, 01:07 PM   #10
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was expecting something else lol

untitled zpsxauol6ww
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Old 07-19-2015, 02:06 PM   #11
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was expecting something else lol

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as was I!
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Old 07-19-2015, 03:34 PM   #12
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Quote:
Originally Posted by 40acres View Post
Check out MJS. Not sure if they have an option for your bike, but they take stock header, cut out that section, weld in a straight pipe and ceramic coat them for about $250. They also offer a core if you ship them your stock headers back.
Offer a core? And I didn't know they did all of that but I'm definitely gonna look into them.
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Old 07-19-2015, 04:43 PM   #13
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Quote:
Originally Posted by silverslug00 View Post
Offer a core? And I didn't know they did all of that but I'm definitely gonna look into them.
They give you a credit for sending in your stock header.
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Old 07-19-2015, 04:52 PM   #14
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Quote:
Originally Posted by Schooley View Post
They give you a credit for sending in your stock header.
How else would they cut headers and weld in a straight pipe. I'm soo lost lol.
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Old 07-19-2015, 08:18 PM   #15
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Quote:
Originally Posted by silverslug00 View Post
How else would they cut headers and weld in a straight pipe. I'm soo lost lol.
Also after research I have seen the light it seems if you ship them your old exhaust after buying one from them you get credit. But seeing as I'm trying to cut a cat and redo that piece only. So o emailed them and we will see what they say.
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