Exhaust Flapper Valve Issues

Let us know how it goes. Some guys were talking about doing the same thing but no reports back yet.

I've sort of got used to this now !

Sounds like the exhaust flapper is working correctly. Maybe the abrupt throttle is because you have the throttle control mode in "race"?

My understanding is that it is not a noise suppressor but an emissions control item. It is meant to shut somewhere around 2500 - 5000 rpm.

There have been several posts on people who have had a similar efffect, but also others have not had this problem.

The exhaust valve is purely for noise "emissions", which is indeed a measured output of all vehicles. Hence the "emissions" item confusion....

Only done 40 odd miles on mine so far but had same thing happen with it suddenly going quiet very strange- then back to normal with opening or closing throttle, no lurching or anything else strange.

I have also heard this all goes away with the Termi slip on or full exhausts as they remove the exhaust flapper control.

tstephenson said:

I have also heard this all goes away with the Termi slip on or full exhausts as they remove the exhaust flapper control.

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+1.

This is the reason I decided to go for the Termis in the first instance. Plus, they sound great and with the up-map, the low rev fuelling (especially) is a lot smoother too.

Rich22 said:

Has anyone noticed the flapper valve is open at start up (when it should be shut to help noise tests) and then at around 3200rpm it shuts when cruising or going down hill and only opens after you open the throttle some way which causes it to suddenly open and lurch forward! not good and is a fault.
Going to try disconnecting the cables and see if it puts up a fault on the dash.

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Mine does exactly this. Dealer told me I was imagining it. Let me know the outcome. I thought it was odd too that the flap is open at idle then closes while you riding. Mine happens at 3500 rpm in 2nd only. I wonder if this is the speed of some drive by noise test they have to pass? Going to video it happening.

Rich22 said:

Has anyone noticed the flapper valve is open at start up (when it should be shut to help noise tests) and then at around 3200rpm it shuts when cruising or going down hill and only opens after you open the throttle some way which causes it to suddenly open and lurch forward! not good and is a fault.
Going to try disconnecting the cables and see if it puts up a fault on the dash.

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Hi Rich...I'm planning on disconnecting the cable only at the servo area or below the swingarm where the cable actuates the Flapper Valve. I will not disconnect the servo unit, so as by doing so, the servo unit does not send a signal to the ECU that it is disconnected. It will still "think" its connected BUT just without the cable.

Is that a good idea? Has anyone tried it? If this flapper valve just for noise restrictions, If it is, then, I dont need it here in my country. As termi cans make much more noise. I want to keep that Flapper Valve always open... to get a consistent vTwin rumble in all the rev range....and possibly more unrestricted power on the rev range where Flapper Valve is supposed to be closed when revved?

Would love to hear your insights on this.

Thanks,
Miguel Bichara
Manila, Philippines
1199 Panigale "S"
(with 1,285kms at the moment)

mig1199 said:

Hi Rich...I'm planning on disconnecting the cable only at the servo area or below the swingarm where the cable actuates the Flapper Valve. I will not disconnect the servo unit, so as by doing so, the servo unit does not send a signal to the ECU that it is disconnected. It will still "think" its connected BUT just without the cable.

Is that a good idea? Has anyone tried it? If this flapper valve just for noise restrictions, If it is, then, I dont need it here in my country. As termi cans make much more noise. I want to keep that Flapper Valve always open... to get a consistent vTwin rumble in all the rev range....and possibly more unrestricted power on the rev range where Flapper Valve is supposed to be closed when revved?

Would love to hear your insights on this.

Thanks,
Miguel Bichara
Manila, Philippines
1199 Panigale "S"
(with 1,285kms at the moment)

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+1 something i would like to know as well

Ducati Kip said:

Only done 40 odd miles on mine so far but had same thing happen with it suddenly going quiet very strange- then back to normal with opening or closing throttle, no lurching or anything else strange.

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This happens on my 1199 S also at low speed/rpm's.

Mine does it too.
If somebody does disconnect theirs please let us know the outcome before I f*** something up

I finally disconnected my Flapper Valve cable at the bottom of the swingarm where the flapper valve is actually located.

I just pushed the flapper valve closed with my finger as it is spring loaded and simply pulled out the cable from it's socket. Job was so simple and no brainer at all. Bike does sound noisier now from 2,500rpm all the way to 6000rpm.

I didn't want to rev much higher as it was late in the evening when I worked on my bike... my damn neighbors might complain again. My dash didnt show anything unusual, I guess there shouldnt be, cos the cable is still connected to the servo. Making the ECU think its still connected.

I will have to wait till this Sunday to fully test it on a ride with my buddies...

I'll keep you guys posted...

Miguel Bichara
Manila, Philippines
1199 Panigale "S" w/abs

If I remember right, the valve actuator on my 1098 would go through a test sweep and if it didn't see the right limits it would through a code. I've seen products that get around this by bolting a lever on the servo that has similar stops as the valve.

Scoop101 said:

Mine does it too.
If somebody does disconnect theirs please let us know the outcome before I f*** something up

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Ok guys!!!! HERE IT IS FINALLY!!!!!! I removed the cable on the Flapper butterfly valve under my Panigale's swingarm as mentioned in my previous post. I just simply pushed the valve's outer ring downward which is on the left hand side of the valve, thereby, giving me slack on the cable...THEN, I simply pulled the cable (with the help of a small flat head screw driver) OUT OF ITS SOCKET...and viola! It came off easy...

NOW the Good news is....I used my bike for 30 minutes and the bike's muffler is much noisier now! Its a healthier sounding vtwin! Love it! As you now get the same Vtwin boom in all rev range! No engine check light too, as I left the cable still connected to the actuator valve servo...so the ECU thinks its still connected to my mechanical flapper valve down below. DONE!!!!

All is ok! You can all try it. I dont feel any flat spot. Just a better, louder exhaust note! Man, with this set-up...you dont need to spend for an aftermarket exhaust anymore...it is now LOUD all the time!

You can also test the exhaust note manually now. Simply start the bike (do this when the engine is cold)...while idling, (wear gloves) and with your index finger you can force close and open the valve with your finger and you will hear the exhaust note change. The valve is spring loaded to automatically stay open..so once you let go... it stays open. No cable connected! Perfect!!!!

Informed some of my Panigale riding buddies, who still have their stock exhausts, about my simple mod! They will do the same, and some have asked me to help them do this 2minute job.

Hope this info helps!

Miguel Bichara
Philippines
Happy 1199 Panigale "S" w/ABS owner!!!

Maybe this could help ?
Ducati Panigale 1199 1199s Exhaust Servo Eliminator | eBay

I would be interested in that. That way I would just run the slip-on's. pretty sweet. Shawn