Exhaust Flapper Valve Issues

bradp51 said:

Josh if you mean by diagnosis - is that how you remove it then I am correct unless you and I have Panigale's from different factories.

There is nothing covering the cable.

I am sure you will work it out at next look.

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I meant your diagnosis of me being, in fact, ........

j

TOPDUC said:

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

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someone said closing the valve during low RPM will some how providing back pressure to the engine, which will make a better torque while engine is at low RPM

it is not only for noise or emissions, is that right?

yet, i have remove the servo wire to the valve, what i feel is the engine output is more linear and smooth..... then why need such a valve?

Shawn said:

Yeah, might be wrong, but looking at how the collector comes down to where ya install the slip-on exhaust. the Flapper is right before that. I believe only the full system will eliminate the flapper without this mod.

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my friend got a tri color, where i can still see the valve, but no wire connected to it........ !!!!!!!

Peter Luk said:

someone said closing the valve during low RPM will some how providing back pressure to the engine, which will make a better torque while engine is at low RPM

it is not only for noise or emissions, is that right?

yet, i have remove the servo wire to the valve, what i feel is the engine output is more linear and smooth..... then why need such a valve?

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Just noise Peter.
The valve does less than nothing for performance.

Going to try this easy mod out tomorrow.

unhook the cable,mate?
done it ages ago!
but i do notice something,the flapper valve sometimes seized.
@stationary,the valve is closed,it opens @ a certain rev&it 'll be roaring all the way.but mine can be quiet(sometimes)through out the whole journey,thus loosing out all the thunder..
i've been on termigs slip on(cable unhook) for quite a while&in the process of doing the u upgrade.
but lately,our little island 've gone crazy,ther's a witch hunt going on,the authorities 've pick on everything & anything,illegal modification is the problem,,summonse 500-1,000 sgd is being mentioned,plus jail term for repeated offence!
so i'm the 1st pani owner locally to revert back to stock zorst with the new upgrade.
(minus the cable of coarse)
let see how it goes,can't say i'm happy with the termigs,sound wise.anyway
will be posting my finding in a day or two.with the upgrade plus stock vs termigs slip ?

What is the pupose of the flapper, is it just so it isn't noisey at lower RPMs? And has anyone got the adapter that allows you to remove the actuator without an error on the dash? And lastly, does it sound as good/simlar to Termis with the insert removed?

Trauma said:

What is the pupose of the flapper, is it just so it isn't noisey at lower RPMs? And has anyone got the adapter that allows you to remove the actuator without an error on the dash? And lastly, does it sound as good/simlar to Termis with the insert removed?

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It closes at certain RPM's to meet EPA noise restrictions. If it's like the EXUP on Yamaha's or like on the Aprilla WSBK, they provide back pressure which improves torque at lower-mid RPMs.

^love that bike

TricoloreSF said:

^love that bike

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Yep, me too. I'm pretty sure the flapper is also for noise reduction at the point on the track where the db meter is setup. The flapper location in the pipe seems to negate any performance rationale.

Removing the flapper on my bike did not throw any codes on the dash.
No issues at all, just smoother running

For those guys who have removed the cable allowing the exhaust flap to always stay open, have you noticed a slightly cooler exhaust while cruising?

My bike's exhaust seems cooler when working hard when the flap should be open (and riding faster of course) and I only get a hot legs when forced to stick on the speed limit and the revs probably match the range that the exhaust flap is partially closed. (100kmh = 3200 rpm?)

So keeping the exhaust unrestricted should keep the gasses flowing and potentially cooler!

I've been running it disconnected for months.. I really don't notice it being cooler or really riding any differently. Just the sound is different and deeper which is what I understood is all it does?

I did get a seriously degrading lecture when I took it in for the new MAP and I told the tech I disconnected it. He flew off the handle in a serious way. I think he would have been more pleasant with me had I ..... his mother.

What I do not understand is how a slip on Termi with no exhaust flapper valve is OK to run and a stock exhaust with a disconnected flapper valve can damage your engine? (as the master tech has informed me)

Please someone chime in and tell me the exhaust flapper valve does something OTHER than lowering the noise so that it can pass noise standards?

yeah but don't you have a different map for the slip ons which probably takes that into consideration?

thomaskenyon said:

I've been running it disconnected for months.. I really don't notice it being cooler or really riding any differently. Just the sound is different and deeper which is what I understood is all it does?

I did get a seriously degrading lecture when I took it in for the new MAP and I told the tech I disconnected it. He flew off the handle in a serious way. I think he would have been more pleasant with me had I ..... his mother.

What I do not understand is how a slip on Termi with no exhaust flapper valve is OK to run and a stock exhaust with a disconnected flapper valve can damage your engine? (as the master tech has informed me)

Please someone chime in and tell me the exhaust flapper valve does something OTHER than lowering the noise so that it can pass noise standards?

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thomaskenyon said:

I've been running it disconnected for months.. I really don't notice it being cooler or really riding any differently. Just the sound is different and deeper which is what I understood is all it does?

I did get a seriously degrading lecture when I took it in for the new MAP and I told the tech I disconnected it. He flew off the handle in a serious way. I think he would have been more pleasant with me had I ..... his mother.

What I do not understand is how a slip on Termi with no exhaust flapper valve is OK to run and a stock exhaust with a disconnected flapper valve can damage your engine? (as the master tech has informed me)

Please someone chime in and tell me the exhaust flapper valve does something OTHER than lowering the noise so that it can pass noise standards?

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Lets just say that your "master tech", "isn't" and let it go at that.

thomaskenyon said:

I've been running it disconnected for months.. I really don't notice it being cooler or really riding any differently. Just the sound is different and deeper which is what I understood is all it does?

I did get a seriously degrading lecture when I took it in for the new MAP and I told the tech I disconnected it. He flew off the handle in a serious way. I think he would have been more pleasant with me had I ..... his mother.

What I do not understand is how a slip on Termi with no exhaust flapper valve is OK to run and a stock exhaust with a disconnected flapper valve can damage your engine? (as the master tech has informed me)

Please someone chime in and tell me the exhaust flapper valve does something OTHER than lowering the noise so that it can pass noise standards?

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WOW! That takes some serious levels of stress to actually take off on you for something so insignificant. And then feed you a bunch of bull on top of it. I gotta give you kudo's for taking it in stride.

I once bought a new bike that was missing the high beam bulb. The dealer ordered one and a week later called and said the bulb was in and to bring the bike by so they could install it. After it was done they handed me a bill for parts and labor, hundred and change. I asked to speak with the service manager about it since it should have been no charge, seeing as the bike was missing the bulb on delivery. After waiting around for 15 or so minutes I ran down the sales manager. He was the one whom I pointed out the missing bulb on delivery and who told me they would get me a new one and install it. He went and found the parts guy and told him there was no charge it was under warranty. They gave me my key and I was on my merry way.

Two hours later I get a call from the service manager. Get this, he is upset with me for not waiting for him and going to the sales manager. I told him that I asked to speak with him but it seemed he was busy and after waiting long enough I talked to the sales manager. He then told me that I was going to have to reconsile myself to the fact that I would have to learn to work with him if I was to have my bike serviced in the future. After I stopped laughing I asked him if he was being serious or joking with me. Turns out he was dead serious. So I told him that I was an old dog who doesn't learn new tricks, bid him good day and hung up.

I got a call back from the GM the next day. He was not amused by the story or the comment by the service manager. I told him that I understand that bikes break, parts fail, checklists get overlooked and that it was totally understandable why the parts department gave me an invoice. Lack of communications. But the treatment by the service manager was an area where I have found that arguing or complaining has far less impact than voting with my dollars.

I never had any issues with gsxr and never needed to decide if I would take it back for warranty service so I had an easy out there. (the bike always has been loyal to me). But I never went back for tires or oil or filters or chains etc... I'll also not be making future purchases on a bike from them either. There are too many other dealers and stores that appreciate and want my business.

Yea, I feel ya.. When he was lecturing me on how bad it was that I disconnected the exhaust valve, I seriously thought he was joking with me based on the level of pissed he was.

I've found that with many Ducati dealers... you don't really "buy" a Ducati from them.. you give them a big pile of cash and they let you "use" one of their children for a time being.

been reading this entire thread and ran into my garage to disconnect the damm thing..... Bam !!!!! done and disconnected or cable removed whatever you wanna wording you want to use. I'm excited to taking the bike out tomorrow to test it out. I had noticed the change in exhaust note while riding since in traffic/city I dont seem to get out 2nd gear.... i feel like i'm living in 2nd gear all the time on the Panigale and hearing my exhaust sound change I was confused and curious to why my bike had just lost sound...... I mean who doesnt want a constant Vrooom sound..... so i'm excited to test it tomorrow

do i need to move the valve / cable or does removing the cable automatically leave the valve open.?

thanks

Fil

Legion748 said:

do i need to move the valve / cable or does removing the cable automatically leave the valve open.?

thanks

Fil

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It is normally open, so removing the cable never allows it to be closed.