04 Exhaust Valve - Kawasaki ZX-10R.net
 
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post #1 of 9 Old 12-01-2008, 11:03 AM Thread Starter
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Question 04 Exhaust Valve

I noticed on my 04 ZX10r the bike has a little butterfly valve that opens and closes i was curious if it was worth taking off or disconnecting? Did not know if it would throw a check engine light or if it even added any horsepower?
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post #2 of 9 Old 12-01-2008, 11:11 AM
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Taking the cables off will set of the FI light and I don't think you will notice a difference with teh stock exhaust. Ivan sells a servo motor eliminator that allows you to completly remove the box and cables. There has also been a few threads about I believe pulling one of the pins in a wiring harness to fix the FI light too. If that one interests you use the search function and you should find it.
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post #3 of 9 Old 12-01-2008, 11:15 AM Thread Starter
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Yeah i have looked and didnt really find anything... it is the stock exhaust, but i shortened it up a little bit. i was looking for sound more then performance on this one.
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post #4 of 9 Old 12-01-2008, 11:19 AM
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I don't know how much it will change the sound cause I removed mine all together when I went to a full system. If your looking for more sound above shortning the pipe what about removing some packing or gutting the can? If not maybe a slip on.

I don't know if it sold but there is a sato full gp system for our bikes on sale in the parts section cheap. There was a little hole in the header that he didn't fix but its an amazing system and anyone that welds Ti should be able to fix it.
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post #5 of 9 Old 12-01-2008, 01:34 PM
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I thought that unless you disconnect the servo the FI light will come on but if you leave the metal pulley on it and take the cables off you will be ok with no codes.....
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post #6 of 9 Old 12-01-2008, 01:42 PM
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Quote:
Originally Posted by garth285 View Post
I thought that unless you disconnect the servo the FI light will come on but if you leave the metal pulley on it and take the cables off you will be ok with no codes.....
Maybe, OP give it a try and find out
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post #7 of 9 Old 12-01-2008, 02:00 PM
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Just disconnect the cables from the servo motor under the seat. This will not trigger the FI light.

Only green is really mean! 1984 GPZ 900R & 2004 ZX10R => 20 years of NINJA power
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post #8 of 9 Old 12-01-2008, 06:34 PM Thread Starter
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So i took out the cables, and left the valve in. It is louder at higher rpm but about the same in the lower rpm's. Just disconnected the cable, i tried disconnecting the servo but it did trigger that FI light. so got it all figured out. thanks guys!
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post #9 of 9 Old 12-02-2008, 01:28 PM
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Weird, should be the other way round. The valve is fully open at about 6K and above, wheras it is partially closed at lower revs. Disconnecting the cables leaves the valve open at all revs, thus making it louder below 6K.

Only green is really mean! 1984 GPZ 900R & 2004 ZX10R => 20 years of NINJA power
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