How do I remove my exup valve motor : Yamaha R1 Forum
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Old 05-17-2007, 07:39 PM   #1
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How do I remove my exup valve motor

I want to remove my exup valve, well I was told to safety wire it open. I also heard not to unplug the exup motor. I wanted some input from the guys on the forum. What have you heard? I have graves Y pipe and slip on exhaust. Is there a jumper plug you can "trick" the computer to think that it is still working? This bike is just for the track. There must be a way, im sure guys with full exhausts remove the exup motor. Let me know. Thanks.
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Old 05-17-2007, 08:14 PM   #2
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I think this is what you are looking for. Click HERE.
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Old 05-17-2007, 08:18 PM   #3
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just take the flap out and make a block off plate, then cut the cables at the motor.
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Old 05-17-2007, 08:48 PM   #4
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Has anyone installed the 7.5K Ohm resistor jumper? Or the sams servo for $99? Im trying to cut all the excess weight off the bike and it would be nice to get rid of that crap.

For now I am going to remove the flap and cut the cables at the motor but it would be nice to get rid of the entire motor.

One more question. What about the kickstand switch? Is there a way to bypass the kickstand switch? I may have to open a new thread for this too.
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Old 05-17-2007, 10:14 PM   #5
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Until you get an aftermarket header, leave in the EXUP valve.
The kickstand wires (2 of them) just need to be opened or closed circuit. I forgot. I think there just wired together.
And if you really want to remove the EXUP valve, remove the cables from the motor, you don;t have to cut. If you remove the motor you;ll get an FI code.
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Old 05-19-2007, 04:00 PM   #6
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And if you really want to remove the EXUP valve, remove the cables from the motor, you don;t have to cut.
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Old 05-19-2007, 06:40 PM   #7
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Well, I talked to Graves Motorsports Tech support and was told there is no issues removing your entire exup valve servo motor (unlugging it), although it will throw a code (engine light will come on). He said most racers just put tape over the light. So that is the route that I am taking. He did mention the "sams servo sub" for $99. But it is not required. (wont do damage). I safety wired my valve open and removed the motor. This is just a track bike and I dont mind taping over the engine light.

Any more thoughts?
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Old 05-20-2007, 10:06 AM   #8
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PM me your E-mail I have circuit diagram and how-to for a simple electronic device for 5 $ It was posted here by a german guy long time ago. I will test it in the upcoming weeks still looking for some electrician to make it.
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Old 05-22-2007, 01:54 AM   #9
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PM sent to yuri_1. I would like to check out the diagram. I can probably build it at my work when I get back in the counrty.

I pulled the servo motor and safety wired the exup flap all the way open, so of course my engine light is on. I will keep everyone posted on a wiring diagram.
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Old 06-03-2007, 07:59 AM   #10
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Quote:
Originally Posted by 05yamabomber View Post
PM sent to yuri_1. I would like to check out the diagram. I can probably build it at my work when I get back in the counrty.

I pulled the servo motor and safety wired the exup flap all the way open, so of course my engine light is on. I will keep everyone posted on a wiring diagram.

I have been making the same sort of mods to my '99. I completely removed the EXUP valve rather than just safty it open - it was really simple. I would also like to get rid of the motor, it is just getting in the way. On the 99 if I remove the actuator, the Tach acts crazy jumping from 0 to 8k. The tack is the "check engine light" for the 99, so just unplugging it isn't and option.

I also PM'd yuri_1 - thanks.
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Old 06-03-2007, 08:40 AM   #11
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Quote:
Originally Posted by 05yamabomber View Post
PM sent to yuri_1. I would like to check out the diagram. I can probably build it at my work when I get back in the counrty.

I pulled the servo motor and safety wired the exup flap all the way open, so of course my engine light is on. I will keep everyone posted on a wiring diagram.
Hey just curious how has the bike acted since u have done this?? I would like to do the same to mine i have slip on and no converter with pc3 but was told if i removed the valve it wouldnt run right??? for my situation would i benefit from removing the valve??
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Old 06-03-2007, 10:15 AM   #12
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All PM repled. actually here in some thread is a link to the diagram also discussion about it, but I can't find it.
It's is made for the old R1's 99-03 but it should work on 04-06 also.
As much I know (not 100% shure) disconnecting the exup motor will limit the engine it's not only the light or tacho problem.
Anyway I will send it to anyone interested. If somebody test it please keep us posted for the results
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Old 06-03-2007, 02:22 PM   #13
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Thanks a lot. I already ordered the components!
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Old 06-03-2007, 02:26 PM   #14
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Originally Posted by yuri_1 View Post
PM me your E-mail I have circuit diagram and how-to for a simple electronic device for 5 $ It was posted here by a german guy long time ago. I will test it in the upcoming weeks still looking for some electrician to make it.
Hell, share it with us all....
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Old 06-03-2007, 09:47 PM   #15
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Ahhh Wheatman As I said there is already a thread about this I'm shure you where involve in it. Didn't you mention this German guy? the thread was about the resistor think.

SoCalR1Rider - keep me posted. I still can't find somebody to make me one
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Old 06-03-2007, 09:49 PM   #16
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Ahhh Wheatman As I said there is already a thread about this I'm shure you where involve in it. Didn't you mention this German guy? the thread was about the resistor think.

SoCalR1Rider - keep me posted. I still can't find somebody to make me one
Doesnt ring a bell, Send it to me and i'll post it up if you dont wanna. Sounds like you have it figured out...
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Old 06-03-2007, 10:13 PM   #17
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later today I will host the files and post a link.
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Old 06-04-2007, 08:22 AM   #18
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To answer the question, "how does your bike run since you pulled it?" Well, the bike is a track bike only and I am out of the Country until June 16th. I have a track day on July 7th at California speedway. So that will be the first time I will run it.

About the comment on bike wont run right, I called the Tech support at Graves motorsports, was told that the racers are pulling the motor, taping over the Check engine light. Seems to be working ok.

I was told not to do it for the street, but for the track is ok. The exup really helps with back pressure when driving around town.

I will let everyone know after my track day (1 month). I am counting the hours!
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Old 06-04-2007, 08:38 PM   #19
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Quote:
Originally Posted by yuri_1 View Post
Ahhh Wheatman As I said there is already a thread about this I'm shure you where involve in it. Didn't you mention this German guy? the thread was about the resistor think.

SoCalR1Rider - keep me posted. I still can't find somebody to make me one
The parts shipped out already. I will be at the track on Friday, but might have some time to put one together this weekend and try it out. I have a '99, but they should all work the same. If I get it up and running I will post here.
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Old 06-05-2007, 10:48 AM   #20
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Quote:
Originally Posted by 05yamabomber View Post
To answer the question, "how does your bike run since you pulled it?" Well, the bike is a track bike only and I am out of the Country until June 16th. I have a track day on July 7th at California speedway. So that will be the first time I will run it.

About the comment on bike wont run right, I called the Tech support at Graves motorsports, was told that the racers are pulling the motor, taping over the Check engine light. Seems to be working ok.

I was told not to do it for the street, but for the track is ok. The exup really helps with back pressure when driving around town.

I will let everyone know after my track day (1 month). I am counting the hours!
i do alot of street riding also so in my situation might be better to leave it alone???
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