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Discussion Starter #1
I've read several threads about EBS valve/relay, and I've read the shop manual, but I still haven't figured out what the EBS does. What is its function? How can I tell if the EBS on my F4 (2007 1000R) is working? Thanks in advance.

P.S. I just came back from MotoGP. It kicks ass.
 

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EBS is a valve located between cylinders one and two and EBS relay is the little component that controls the valve. It is usually the relay that goes bad, not the valve.

I believe you will only find them on the 05 and 06 models. They got rid of the system in 2007 and later. I may be wrong on that.
 

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EBS relay releases compression to prevent rear wheel hopping . It's purpose is better traction on deceleration. Kinda like a slipper clutch but electronic. And no You don't have one. 05-06 F-41000S bikes only.
 

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Discussion Starter #4
OK, thanks for the replies. So without a slipper clutch and without EBS you practically can't be downshifting and using the engine to brake, right? Can you "blip" the throttle while you brake, you know, like the "heel-and-toe" motion in a car?
 

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Nico is slightly wrong there, the 1000R+ models do have the EBS system, but the valve is controlled by the ECU direct, not via a relay as on 1000S models.
So ues, your bike has the EBS system, and you can hear of feel it when shutting down at certain revs, it souyds a bit like an exhaust brake.

And who said you can't downshift the bike when braking, you just need to match the revs.
 

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EBS is a valve located between cylinders one and two and EBS relay is the little component that controls the valve. It is usually the relay that goes bad, not the valve.

I believe you will only find them on the 05 and 06 models. They got rid of the system in 2007 and later. I may be wrong on that.
Carl,my 1078F4 2009 model has EBS and slipper clutch of course:naughty:
 

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EBS system:

It opposes the engine braking by adding fuel and air to one cylinder on the over run, a clever system at the time and now also used by the likes of the Yamaha X plane engine, Yamaha's system is ''better'' controlled due to being able to operate the fly by wire throttle system and work across all 4 cylinders due to the more precise control of the FBW system.

I used to do something similar on my Ducati's, I used to set the fast idle control at around 1900rpm with the engine hot, Then I would activate the fast idle when riding ''enthusiastically'' It had the same effect of reducing the engine braking torque
 

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Last week I was riding my Moto Guzzi home from a bike meet. A friend was following me on a Suzuki GS 1000.

I was on a long sweeping curve and applying throttle as one does. As I straightened up I dropped the throttle for a second and then carried on applying normal cruise power.

When we got back home my friend quipped how I had almost " stopped" relative to him just at the point when he thought I was gonna give it the beans and he almost went into the back of me. (m he shouldn't a been riding up my chuff ! )

The engine braking on a 1200 V Twin is errrm significant...

So, for our MVs there is under engine braking an ecu controlled solenoid operated valve which introduces air into the intake of # 2 cylinder. I can only surmise that the fuel injection is ecu controlled.

The ecu solenoid merely introduces filtered air into the intake of #2.

The desired effect is to add a trickle of power to reduce the effect I experience on my Guzzi last week.

Joe
 

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Mine has it too. How can you tell is working? You can feel the bike farting when closed throttle at low revs. To me annoying so I removed through microtec ecu and now all is good
 

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Yeh the EBS does cause a backfire effect when the throttle is closed for a while,then just as you add throttle bang,just unburnt fuel exploding so to speak.EBS stands for Electronic Braking System so I understand.
 

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Discussion Starter #11
And who said you can't downshift the bike when braking, you just need to match the revs.
How do you do that? I mean, you are gripping the brake, and while you do that you would have to blip the throttle. I've tried it but I guess I'm not dexterous enough. Are there courses where they teach you this kind of stuff?
 

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So, for our MVs there is under engine braking an ecu controlled solenoid operated valve which introduces air into the intake of # 2 cylinder. I can only surmise that the fuel injection is ecu controlled.

The ecu solenoid merely introduces filtered air into the intake of #2.

Joe
Also adds fuel as well Joe, that is the problem with the 1000S as the EBS relay/ecu has to take the 12Vdc off injector 3 to stop that injecting fuel as well as number 2 injector.
The 1000S fires all injectors every revolution but in pairs (1&4) (2&3)
 

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Franco. It´s a matter of practise in a safe environment.
I have restricted movement in my right wrist due to a sports injury and a quick action throttle is vital for me, but "blipping" the throttle while braking is not a problem.
It is a good skill to have.
 

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Also adds fuel as well Joe, that is the problem with the 1000S as the EBS relay/ecu has to take the 12Vdc off injector 3 to stop that injecting fuel as well as number 2 injector.
The 1000S fires all injectors every revolution but in pairs (1&4) (2&3)
Agree Mike.. :) I meant the ecu valve supplies filtered air into the #2 manifold..fuel via the injector (.ie there isn't a separate circuit for fuel)...controlled ecu post 2006 .
joe
 

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A lot of current bikes have a system to raise "idle speed" during decel to assist downshifts and reduce engine braking.
Some do it via an idle air control valve....same one that regulates idle speed, controlled by the ECU. Some do it via "ride by wire" throttle valve manipulation.
MV was one of the first using the EBS system, but the concept is now common. BMW, Ducati, Honda, Suzuki...virtually all current hyper-sport bikes.
 
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