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I was told by a salesman that the 2002 was speed restricted at 186 mph and there was no way of modifying it to take the restriction away. I find it hard to believe you can't get rid of the restriction somehow. Is this true?

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I was told the same thing by a buddy, said there is a fix and was going to save the article in the mag. he read it in, haven't seen it yet.

Bottom line is there's a way around most everything, problem is how much is it going to cost ?

Scott W.

2001 Dodge 3500 CTD making 450 RWHP on #2 alone. 2002 blue ZX-12R, stock, but not for long. I am my own warranty station. </p>
 

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There is a fix.
you have the yellow box or the thing that muzzy sells.
Many people know more about each than me. But the yellow works by telling the ecu you are going some other speed this means your speed on the readout is wrong, but i believe somebody worked it so that using two yellow boxes it worked out. (I am trying to remeber how the yellow works I am not coming up with much since it has not been brought up in awhile.)

You can either refresh a bunch of times till the yellow box add comes up or goto www.blackrobotics.com they even have stuff on how it works .

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Who cares about the speed restriction!!!...Damn 12 still kicks ass!!!...Besides how many guys actually do 186 anyway???


CrotchRocket

" I just live my life a 1/4 mile at a time "</p>
 

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I also have a Bonneville box, used it for about 1000 miles. Went as fast as I could, don't know how fast that was cause the speedo is way off at top speed w/o the yellow box, besides , its to hard to find places (for me.) to go 186+ safely. Plus it takes your rev-limiter off, and in the 1/4 mile the limiter comes in handy...but if you get anywhere near Ft Worth Texas I'll take $50 for it and install it for free.

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Although I could be wrong, I don't believe the speed restriction has anything to do with 6th gear. My understanding is that the speed restriction is based on the input from the speed sensor. When the speed sensor indicates 186mph, then it starts to cut the ignition just like a rev limiter. Using 2 yellow boxes would work, the bonniville box from muzzy should do it also. But if you speed correct the speedo with just 1 yellow box, you should be able to hit a "true" 186mph. Plenty fast enough for anything but a land speed record attemp. I hit an idicated 180mph on mine with a corrected speedo just recently and I don't plan on making it a habit. My balls started shrinking exponentially with my speed.

If it is 6th gear only that is restricted, which I don't think it is, then it is very easy to derestrict. Just cut the 6th gear indicator wire and splice it into the 5th gear indicator. That should do the trick and wouldn't cost a nickel. (I don't think this is the case, but you never know)

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Well atleast it is not very expensive. I could be a lot worse anyway. It sounds like I will need two of them to do it correctly. I was pretty sure there would be some kind of fix. The salesman was assuring me that there was no way to fix it unless I bought another computer for it...and he didn't know where I would get that. He just didn't want to help me. I won't be buying from him, or his store.

You are right, 186 is extremely fast. And on a bike, I may wuss out. But for now my goal is high nines in the quarter and a top speed of 200mph. Right now the cheapest way to do that is a zx12r. Death doesn't scare me. Being disabled scares the crap out of me. I have this thing about pain I don't like either. But I can't seem to rest until I hit my goals. Then I will probably make new goals. But I won't know until I am there.

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"I never exceed 65 mph because I am a law abiding citizen" <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">

Hello, My name is OutsiderZX12R, and I am a ZX-12R.org addict.</p>
 
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hehe, I am sure you went out and bought a 12 to do 65. <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">

You know normal people think that a 600 sport bike is fast. Makes you wonder what they think about the twelve.

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I'll keep my 12 the way it is. Seldom ride that I don't exceed 120-130 mph & that is on the interstate while passing a couple cars. The roll on from 70 mph to 130 mph is very, very quick!

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Us 2000 owners luckily don't have to deal with these problems.
Damn I love my 2000!

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Just a piece of advice, before you spend all kinds of time and effort, and money on this, take your zx12 out and hit the top speed limiter.

See if it is something you have the balls to do, and if you really want to try to do it again.

I've been into the upper reaches of the unlimited '00 zx12's capabilities, and I can tell you the bike has bigger balls than I do. I did not have the cajones to top the bike out. I am honest.

I've heard a few guys talk of showing over 200 mph on the odo, but never a GPS or radar reading to prove their speed. Also accounting for 10% speedo error, that 200 mile indicated could be a 180 net run. Not slow, but a loooong ways from 200.

Whatever you do, make sure your mojo is with you, and all your senses are totally aligned. At those speeds one teeny, tiny mistake, or rabbit and you are dead, now matter how much equipment you have on.

At the upper reaches, I strongly advise you not to try to look at and decipher the speedo.

Get a GPS for this excercise.

"Here, hold my trophy while I kiss your girlfriend."</p>
 

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The bonneville box is available at muzzy for the 02 for about 90 bucks.My 01 was restricted to 186 and i put it on,it gave a few extra m.p.h,wasnt worth the $$ in my book,one hardly ever see's speeds that high on a regular basis unless they have a deathwish.i origanally bought mine because at the time i was wrongly told the restrictor limits r.p.m's in all gears,but it is just in 6th and fools the computer to saying your going 60 m.p.h instead of 186.

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The stuff that is used to correct typing errors. I have white dots on the face of the odometer at 50-70-100-150. Much easier to see at a quick glance then the odometer.

I'm a Interstate junkie because there are locations where you can run flat out. It doesn't take much distance on the 12 to exceed 150 mph.

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Where in the hell are you? Your profile doesn't give a clue?<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)"> .

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Man, you guys gotta come here just to ride fast. We got roads that you can run wide open for miles and never see another car. I love riding wide open. So far I've hit 290 kmh indicated and still climbing although very slowly. Nothing but flat straight roads here. I can't believe how stable the bike is at those speeds. Its as stable at 290 as it is at 190. Gotta love it....Rizzo

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