Ducati Monster Forum

Moto Board => Tech => Topic started by: WetDuc on August 31, 2010, 03:50:34 PM

Title: S2R1000 Intake Honking
Post by: WetDuc on August 31, 2010, 03:50:34 PM
CONSTANT HONKING IS GONE!  [thumbsup] [drink]
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The honking and the awesome power are very consistent from day to day riding.  I'm not a fan of the constant honking between 3-3.5k rpm, but I do like the sound when I am accelerating, THAT sound is SICK.  If the midpipes ever ship from Italy...this quest can proceed.
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At this point I think the noise I hear is intake honking.  I love to hear it when I'm getting on the gas, but as a constant honk in a heavily used rpm range, it's getting pretty annoying.  Next step is to get and install the midpipes then tune the bike.  I'm hoping after that I have the fueling I'm looking for.

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I suspect the udder right now more than anything.  I am going to take the Termi's off and run with just the udder to do a test today on the way into work.  I want to get rid of the backpressure completely as soon as I can so I can run the full setup with midpipes.  I'm thinking the Marvings.

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I got my new bike and I have a totally stupid question that is probably born completely of my insecurity and lack of riding time on the new-to-me 2007 S2R1000 I got.  It has 1400 miles, DP ECU and open airbox.
I have not ridden it too much yet, but I do notice that when I get on the throttle and accelerate hard, I hear a kind of clacking or loud clicking noise.  It stays in time with the RPM's and is only audible under heavy acceleration, I don't hear it when I slowly accelerate even at high RPM.  I do not notice any kind of change in power delivery, it seems smooth and predictable.
I noticed my buddy's 696 kind of makes a similar noise...maybe...this just seems louder.
Anybody notice anything like this or have any input?  I'm just curious and at the risk of seeming completely ignorant, I wanted to run it past you more knowledgeable guys and gals.
Thanks for the help.
Title: Re: S2R1000 clacking noise on hard acceleration
Post by: lofty55 on August 31, 2010, 06:40:45 PM
Do you have the stock exhaust?

I have the same bike and one time...

The plastic washer on one of the bolts that holds the heat shroud to the cans somehow broke and CLICKITY CLACKITY.

Rev the bike and push down on the shroud so it doesn't rattle to test it.

Just thinking out loud. Hope you find it.

Your not hearing the dry clutch chatter are you? Cuz that's normal. Where is the sound coming from? Front back bottom? Engine?

Good luck
Title: Re: S2R1000 clacking noise on hard acceleration
Post by: vossy on August 31, 2010, 08:43:47 PM
More details like lofty said.

induction noise maybe on hard throttle??
Title: Re: S2R1000 clacking noise on hard acceleration
Post by: WetDuc on August 31, 2010, 09:20:45 PM
If I were to try to generalize, I would say the noise comes from the engine front and center.  I do not think it is the clutch, as I was under the impression that the dry clutch only chatters when in neutral or with the clutch lever pulled in.
I do not have stock exhaust, right now the bike is just running out of the udder and I have the carbon termi cans, but they are not on the bike right now.
Maybe this whole deal is just from the udder?...
Title: Re: S2R1000 clacking noise on hard acceleration
Post by: lofty55 on September 04, 2010, 04:53:18 PM
Could be that the bike is tuned for your termis and not just the udder. I know when I put my arrows on with a new ECU and intake, it popped like hell til I had it tuned. You can also check your headers to make sure those 2 little screws are intact. One of those fell out on me and the bike started popping.
Title: Re: S2R1000 clacking noise on hard acceleration
Post by: DarkStaR on September 05, 2010, 10:13:33 AM
Valves and rockers.
Title: Re: S2R1000 clacking noise on hard acceleration
Post by: A.duc.H.duc. on September 06, 2010, 03:25:27 AM
Quote from: DarkStaR on September 05, 2010, 10:13:33 AM
Valves and rockers.

Sounds like valves and rockers to me too.

It's probably nothing terribly bad. Adjust the shimming on your valves and it should quiet down.
Title: Re: S2R1000 clacking noise on hard acceleration
Post by: WetDuc on September 06, 2010, 04:11:58 PM
So I rode for 4 hours today traveling from Atlanta to Tallahassee.
Let me say I love this motorcycle.
I had the Termi's on with the udder.  I think I need to modify my terms used to describe this noise.  It's more like a knock than a clack and I notice it mostly between specific rpm ranges around 3-4k.  If I'm cruising at 3700rpm, I hear the knocking the loudest.  Just over 4k rpm and the sound is gone.  Below 3k rpm it is not very noticeable, but comes up again when I accelerate.
To me it sounds like it's coming from the engine and I'm wondering if it is because the bike has the DP ECU and chopped airbox, but still has the udder.  I'm not 100% sure, but I think the clacking/knocking noise is more noticeable when I have the Termi's on rather than when I am just straight out of the udder.  Personally, I feel like I have to get some midpipes and run it like that to see if the noise is simply from the udder causing excess backpressure.
I can hear the valves and rockers, and I don't think this noise is coming from them because it is quite loud and sounds more like exhaust...but I really am not sure.
The bike feels fine and the power is good and smooth, but if I try to cruise around 3.7k rpm, the sound is super annoying and I know it's not right.
Currently shopping midpipes.
Title: Re: S2R1000 clacking/knocking noise between 3.5-4k rpm
Post by: DarkStaR on September 06, 2010, 05:01:09 PM
Does it sound like piston knock?

What gas are you using?

If your using low grade gas, try going up a grade, and see if it still happens.
Title: Re: S2R1000 clacking/knocking noise between 3.5-4k rpm
Post by: WetDuc on September 07, 2010, 05:03:38 AM
I'm really embarressed.  I'm not really a total idiot, I just really make the beast with two backsed up this time.
Upon getting work I realize my horizontal cylinder spark plug is not plugged in.  I was horrified.  I believe it happened when "we" were cleaning the bike in Atlanta before the ride to Tallahassee.
I plugged it, did a test ride.  The noise is still there, located more around 3.4rpm and much quieter, but it does sound when I accelerate.  It sounds like woodywoodpecker is in my engine (just trying to describe the noise).


I hope I didn't kill my bike...hopefully you guys will agree it's not dead.  I can't believe it ran...
Title: Re: S2R1000 clacking/knocking noise between 3-3.5k rpm when accelerating
Post by: WetDuc on September 10, 2010, 07:32:48 AM
Could I just be hearing the open airbox and not realize it?  My 695 had a stock airbox, the S2R has had the top lid chopped.
I can definitely hear a roaring noise coming from the airbox area when I accelerate hard, and I hear a similar noise in the 3-3.5k rpm range, the steady noise at the 3-3.5k rpm range has kind of a pop to it, but it definitely similar to the roaring noise when accelerating.
Excuse my ignorance, this bike is new to me and I'm trying to learn without having to submit to my local dealership for everything.
Title: Re: S2R1000 clacking/knocking noise between 3-3.5k rpm when accelerating
Post by: Howie on September 10, 2010, 12:05:26 PM
Quote from: iamhybris on September 10, 2010, 07:32:48 AM
Could I just be hearing the open airbox and not realize it?  My 695 had a stock airbox, the S2R has had the top lid chopped.
I can definitely hear a roaring noise coming from the airbox area when I accelerate hard, and I hear a similar noise in the 3-3.5k rpm range, the steady noise at the 3-3.5k rpm range has kind of a pop to it, but it definitely similar to the roaring noise when accelerating.
Excuse my ignorance, this bike is new to me and I'm trying to learn without having to submit to my local dealership for everything.

Yes you could, problem is we can't hear it.  Any possibility of finding an educated local ear?
Title: Re: S2R1000 clacking/knocking noise between 3-3.5k rpm when accelerating
Post by: WetDuc on September 10, 2010, 12:21:25 PM
We are an endangered species riding Ducati's in Tallahassee.  I'm trying to get someone at the dealership to ride it, but they won't even do it without a work order...
The more I listen to it, the more I think it is intake honk.
I'm more curious why it would show up in just one specific rpm range as a constant honking but otherwise is almost silent unless I accelerate hard.
Title: Re: S2R1000 clacking/knocking noise between 3-3.5k rpm when accelerating
Post by: zarn02 on September 10, 2010, 03:52:47 PM
Quote from: iamhybris on September 10, 2010, 12:21:25 PM
We are an endangered species riding Ducati's in Tallahassee.  I'm trying to get someone at the dealership to ride it, but they won't even do it without a work order...
The more I listen to it, the more I think it is intake honk.
I'm more curious why it would show up in just one specific rpm range as a constant honking but otherwise is almost silent unless I accelerate hard.

I could see intake honk being "woodpeckerey" under the right conditions (such as your helmet or ear plugs [if you wear them] filtering out other noises more] ).

I know both my 900 and the 996 (God rest them both...) would have noises that only seemed to come through at certain RPM ranges.

That said, if you find it worrisome it's probably worth a few bucks to have somebody take a peek at it.
Title: Re: S2R1000 clacking/knocking noise between 3-3.5k rpm when accelerating
Post by: lofty55 on September 11, 2010, 12:46:41 AM
Chopped air box, termis, dp ECU, still has the udder. Was it ever professionally tuned? When I did these mods, my s2r ran like crap until my mech hooked it up to VDST. All sorts of crazy noises before vdst.

I could be wrong but.... you can't just throw all these mods at it without tuning for the changes. Did the previous owner mention anything? Is your dp ECU for slip ons or a full system?
If you eliminate the udder now, you will need to flash the ECU to full system specs. Was the exhaust purchased with the ECU or pieced together?

I paid my mech $200 to tune it. VDST alone is $200 but I don't know the ins and outs of tuning so it made more sense for me to pay to have it done. Pick your battles I guess.

If your answer to all this is, "yes its been tuned," then I'm stumped.
Title: Re: S2R1000 clacking/knocking noise between 3-3.5k rpm when accelerating
Post by: WetDuc on September 11, 2010, 05:44:19 AM
I bought the bike from a private dealer who got it at an auction.
He doesn't know too much about Ducati's and only had this one for a few months before selling it to me.  He said he thinks it got repossessed and sat with DNA for a while before being auctioned.
Other than that, I don't quite know if the mods were a kit or piece by piece.   

Is there any way for me to tell the difference between the ECU's of a full system from a slip-on?  I guess I can always just fit the midpipes and see how it runs once they finally get here from Italy.

Either way, I was going to get it tuned after the midpipes, but will I absolutely need an ECU flash?
Title: Re: S2R1000 clacking/knocking noise between 3-3.5k rpm when accelerating
Post by: lofty55 on September 11, 2010, 11:57:29 AM
Not sure there is a way to tell the difference in ECU just by appearance. I'm guessing no.

Right now you have your lambda sensor plugged in to the udder right? So the ECU is set for an open loop system and slipons, we think. If your new midpipe has the sensor hole, you may not have to reflash. But if you eliminate the o2 sensor and ogo closed loop, like I did, you should reflash. It costs about 250 bucks and some downtime.

Not sure if this is 100% accurate, maybe someone else can chime in if I'm talking shit. Just trying to share what I know, or think I know, since we have the same bike.

Other than this noise, is there any other issue? Surging at all? Does it sound like a bowl of rice crispies on decel? Snap crackle pop. Do you lose power or studder at the noises rpm range?

If you install your new midpipe and its still giving you problems, look on the bright side. Your bike looks a hell of a lot cleaner without the udder!





Title: Re: S2R1000 clacking/knocking noise between 3-3.5k rpm when accelerating
Post by: Howie on September 11, 2010, 04:53:01 PM
If the Ducati Performance part # is still on it your dealer should be able to tell you.
Title: Re: S2R1000 clacking/knocking noise between 3-3.5k rpm when accelerating
Post by: WetDuc on September 12, 2010, 06:24:26 AM
I have part # 9651706B.
I would go have it tuned now, but I really want to get the midpipes first and fix any of these ECU issues.  I'm going to talk to the mechanic on Tuesday and find out if he can tell.
I noticed my O2 sensor has been disconnected and the connector capped off.  Would the Termi slip-on system run with the O2 sensor and the full system run without it?  Duno...
Title: Re: S2R1000 clacking/knocking noise between 3-3.5k rpm when accelerating
Post by: lofty55 on September 12, 2010, 04:15:00 PM
Interesting....

QuoteWould the Termi slip-on system run with the O2 sensor and the full system run without it?

I was under the impression that this was true, especially if purchased together.  But....

If someone put on a full system ECU with slipons and chopped airbox and capped the plug. It might work ok but would still need tuning.

Put on the midpipe and see what happens.

My mech told me that my bike is more difficult to tune because of the beast-r intake (fancy pod filters). Its sucking in so much air that its hard to tune at low rpms. Partly cuz I havent done any top end engine work.

This is similar to what's happening with your chopped intake I imagine. I've also heard people say to not chop an airbox cuz its designed to pull from still air. Dunno if its true or not. The pod filters only work because they attach to velocity stacks.

After your mid pipe install. A good mech should be able to tune that sucker up.

My tuning involved tps reset, trim adjustments, higher idle. Prolly some other things.... ??? I'm also not a fan of power commander stuff. I've been fine without it.




Title: Re: S2R1000 constant intake honking between 3-3.5k rpm
Post by: WetDuc on September 15, 2010, 08:17:51 AM
I'm honking away everyday.  :-\
The bike seems to run perfect even when the constant honking is the loudest.  I'm pretty sure that is the cause of the noise I hear. 
I have considered buying a stock airbox lid and chopping it myself so that it will still include a bit more of the front of the lid to block rain, and maybe noise.
But even if the lid was on, this honking would still be loud.   It must need tuning. 
Whether my ECU is for a full system or a slip-on, I still have no clue until I get up with the dealer for the tune after my midpipes finally get here.

Midpipes should be here in about a week!  Wooooohoooooo!
Title: Re: S2R1000 constant intake honking between 3-3.5k rpm
Post by: Speeddog on September 15, 2010, 09:44:36 AM
Swap the lid from the 695 on there and take it for a spin.
Title: Re: S2R1000 constant intake honking between 3-3.5k rpm
Post by: WetDuc on September 15, 2010, 09:49:50 AM
I'll give it a try, but won't it run crappy anyway from the lack of airflow?  I would be able to see if it muffles the sound, but in the end, I want to run the open airbox with the DP ECU the bike already has.
Am I just whining, and constant intake honking at a specific rpm range is normal for a ducati with the airbox chopped?!
Title: Re: S2R1000 constant intake honking between 3-3.5k rpm
Post by: Speeddog on September 15, 2010, 10:56:36 AM
It's a quick test, and it's free.  ;)
Title: Re: S2R1000 constant intake honking between 3-3.5k rpm
Post by: lofty55 on September 15, 2010, 07:34:30 PM
QuoteI'll give it a try, but won't it run crappy anyway from the lack of airflow?

Not necessarily, too much air flow can be bad. And remember the whole still air argument! Your chopped box isn't performing the same as pod filters with velocity stacks.

Buy yourself a decent intake setup if you want an open airbox.  250 for tpo kit and 350 for the -r kit.  There are other options as well.

Also remember that if you decide to change things down the road, you will more than likely have to get it tuned again.
Title: Re: S2R1000 constant intake honking between 3-3.5k rpm
Post by: lofty55 on September 15, 2010, 07:48:45 PM
Oh yea wanted to thow this at ya too....

Even though i had a full system with dp ECU, my beast r intake was almost too much air. The whole open airbox mod will make our bikes perform better with proper tuning. But the real gains are seen when open style intakes are combined with serious engine mods like big bore kits etc.
Title: Re: S2R1000 constant intake honking between 3-3.5k rpm
Post by: WetDuc on September 16, 2010, 02:02:20 AM
Interesting ideas about airflow.  Per Speeddog's advice, I am going to slap the airbox lid from the 695 on real quick to see how the bike runs.  I looked at the airbox again and it seems obvious that it was chopped, it is not a Termi airbox lid, so I'm doubting that the slip-ons and ECU were bought as part of a slip-on kit.  I would like to re-chop a used airbox lid in a way that will block rain a little better than the current lid.



I just wanted to add that I took a look at the ECU again yesterday, and it seems that the sticker with the DP part # is correct as I stated it previously, but there is also another sticker on the other side of the ECU.
This second sticker has some identification numbers on it that I wanted to throw out there:
2233SB01           60HCB3N1I  023  0B

Can anyone identify my ECU as full system or slip-on with this info?
Title: Re: S2R1000 constant intake honking between 3-3.5k rpm
Post by: WetDuc on September 28, 2010, 09:11:18 AM
Just a quick question:
Does the open airbox lid that comes with the Termi kit look like a stock airbox lid that was cut with a hacksaw by a 12year old?  Mine literally just looked like the top was sawed off.  I'm trying to determine if the previous owner installed a Termi kit or just pieced together the ECU and pipes then cut the airbox.

(http://i48.photobucket.com/albums/f215/instaphd/IMAG0316.jpg)
(http://i48.photobucket.com/albums/f215/instaphd/IMAG0315.jpg)
Title: Re: S2R1000 Intake Honking
Post by: lofty55 on September 28, 2010, 09:04:33 PM
From what I have seen, the kit comes with a red high(er) flow filter that fits in the stock airbox. I don't think it comes with a new lid, just the filter.
Title: Re: S2R1000 Intake Honking
Post by: WetDuc on October 28, 2010, 12:10:57 PM
Installed the Marving mid-pipes this morning.  The bends and mounting plates required some elbow grease to get the right fitment, but it got on just fine and looks great!  The sound is out of this world, but the best part is that the intake honking that used to be constant between 3-3.5k rpm is TOTALLY GONE!  The bike rumbles so beautifully and only honks at me when I gun it.
So great, so frikkin cool!!!
Title: Re: S2R1000 Intake Honking
Post by: vossy on October 28, 2010, 06:49:00 PM
 [clap] [clap] [thumbsup] [moto]

And they lived happily ever after.

The end.
Title: Re: S2R1000 Intake Honking
Post by: WetDuc on October 29, 2010, 11:16:36 AM
OMG, the decel noise is heaven.  I thought my 695 sounded good on the decel with the chopped cans, but the Termi's on the S2R roar so amazingly now.
I agree, maybe now I can live happily ever after with it. ;D