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After reading many of the posts here I have decided to go with the D&D slipon. I know it's not as good probably as the Akro, and it seems to certainly be loud, but it is cost conservative. My main concerns are: Should I go with carbon fiber, alum, or TI ??? My gut says stay with the TI as I like its looks from the stock can, BUT the carbon looks good too and does it save weight???



I assume that there is NOTHING needed as far as the engine goes. It will run properly (i.e. not too lean/rich)??? Also, can I make this mod myself (I am decent mechanically, especially if it has wires) ? Looking front to back to the stock can, there are 4 bolts to remove and the foot peg attachment??? That's it?

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CUT ??? Yikes !!! What will I need to do that ? Hopefully not a blow torch or some hideous tools ??? Pic of a before and after cut anyone ??? I knew I should have hired someone to do this 4 me. DOH!

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I don't believe you HAVE to remove the catalytic converter. It would free up 1-2 more hp. Here is a helpful link for you:



www.zx-12r.org/Motorcycle_info/Information%20Pages/PopularLA12MODS.htm



I don't think it would be too bad to remove. I was not planning on removing mine unless I have to. I have e-mailed Bob with some questions and I will get back with you.

Mark - Pearl Mystic Black -2002 ZX12R</p>Edited by: <A HREF=http://pub56.ezboard.com/umwrzx12.showPublicProfile?language=EN>mwrzx12</A> 
at: 5/22/02 8:12:47 am




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Does removing the cat make it louder??

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What about the recent thread by a rider that installed a D&D can at the first service and was so dissappointed by the performance, that he thought his 2002 was slower than the previous models until he put the stock can back on?



Removing the cat con had no effect on sound with the stock muffler. However, it is a restriction.

Bogus

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I just saw mine for the first time today and that sonofah bitch is heavy. And its just the can!! Nice craftsmanship though. I can't wait to hear it but I have to wait till tommorow. The bike is going through it 1st service today

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Dave is speaking of my buddy Rick's friend who's 02' responded very badly with the D&D and he did infact take it off and put the stock can back on. While I have no idea if this true for all 02's or all D&D's it was true with his. Now as far as removing the Cat, you don't HAVE to but my question is why wouldn't you? If you are spending the money to get a freer flowing can in the D&D then why leave a restricting device like the cat in the headers? Doesn't make much sense. If you have a Sawzaw it's a breeze, just cut the whole header extension right at the flange and the cat is then only 1" thick which you can chip out with a chisle. If no sawzaw then you have some work ahead by using a Hacksaw to cut the pipe and cat, or chisle out the cat with a chisle and hammer, then cut the pipe. Either way you do it just make sure once the cat is out that before you install the new can that you fire that beast up and reve it a bit to blow all the small peices of the cat that will be in the headers. And a tip, don't let anyone stand behind the bike when you do this and be ready for some LOUD ass noise when you fire that baby up. Man that was cool when I did that althought it became mute shortly after cause I bought the full Yosh race system a month later.

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I put a D&D slip-on on my 02 2 weeks ago,....I have not noticed any performance degradation.



There is no carbon fiber or titanium D&D slip on. Your choices are black or polished.



Also, you DO NOT have to remove the cat con for the slip on to fit. I removed the cat con..it was not worth the trouble. 1-2 hp??? What a waste... that's only a 0.5% hp increase on the top end only.



I replaced a Yosh slip on with the D&D. The D&D is DEFINITELY LIGHTER THAT THE FACTORY AND THE YOSH!.



Anyway, you can't believe everything that's posted here. Use your best judgement based on your own research and go for it.









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Anyone know why doesn't D&D make a full system for the 12???? Trying to save weight by putting on a Slip on....is useless.... the weight on the stocker is actually in the header pipe and connecter, not in the can. Just my thought and opinion!

Smokn12R

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Scrawn I put the Yosh slip-on on and left my cat, in. it's just as loud as Ninja Dude's Two Brother's Slip-on and he has cat, removed.



And i just smoked him on the dyno last Saturday<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> Had to add that since he was saying he was gonna knock me off my HP throne.



I left the cat in cause i'm still under warrenty and i hoped the back pressure from cat would keep Air Fuel Ratio correct, Since i don't have a PCIII.









2001 ZX12R Ninja,

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Just one more worthless opinion... I'd leave the cat in. Most people will eventually go to a full exhaust anyway, and if you leave the cat in you can go always go from aftermarket exhaust back to 100% stock. I've been wondering if I'll regret removing mine now that I've got the Akro. Houston's getting pretty tough with their pollution laws, and I wouldn't be surprised to see emissions testing on bikes soon. I'm wondering how I'll fair without the stock exhaust and cat. I suppose I can just lean the bike out for any inspections though...

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Otis, sorry you may be offended at my remarks, but I stand by them. There are lots of subjective statements that say "you must" do this.



This is an informative boards, not the gospel.



I did not call you or anyone else a liar, however opinion too often doesn't equal facts.

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I agree Vinnie....I wish I had left the cat in....I was new to the board and was swayed too much by what I read. It didn't make any difference in sound or performance.

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Removing the cat will make no difference in felt performance. However, I'm convinced that it does improve the midrange. This is based on street testing with a Gxer1000, not my seat of the pants dyno. Don't expect to feel a few horsepower more or less. The cat is a power robbing restriction.

Bogus Dave

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Otis, I was not singling out your response, or the responses on this particular post, but of the whole bulletin board. This board is like reading a newspaper, there is lots of good information, but just like you wouldn't pick a heart surgeon from a newspaper ad, neither is it wise to make decisions that could ultimately result in catastrophe based on subjective information and anecdotal evidence. I'm just trying to enlighten the 12r brethren that just because it's posted here doesn't mean it's infallible. I too am guilty of posting opinion.





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