Lumpy at constant throttle

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Joined
Apr 8, 2013
Messages
5
Location
Bristol UK
Hi all,

Please excuse me if there are a number of similar threads on the forum. I am new to both Ducati and the forum and after my first weekend with the 1199s I wanted to ask other riders of their experience with the 1199s.

Background

I have a 1199s which was first on the road in the UK in April 2012. It is therefore one of the early models. It is in standard trim. It is new to me as of the weekend 6th/7th April 2013.

I purchased the bike from a local non-ducati dealer as they were daft enough to take my old (worthless) Cagiva Raptor 1000 in part ex against this bike they had in stock. Apparently the last owner had been an Aprilia fan all his life, changed to the Ducati for a year and just didn't get on with it so switched back. This dealer is an Aprilia main agent, so it all stacks up.

Before delivery the bike was sent to our local Ducati dealer (who we know well having purchased my girlfriends Monster 696 from them last year) who ran all the checks for recalls and gave the bike the latest ECU update. They also confirmed to me the bikes history as it was originally purchased form them. From what I can tell its all sound/genuine.

Whilst the delivery checks and updates were being done the dealer found that the O2 sensor on the vertical cylinder was disconnected (direct quote so hope this is correct).

The O2 sensor was reconnected before delivery and I am told that all ECU errors etc have been cleared and nothing comes up on the display.

Problem

I have noticed two things at constant throttle both of which confuse, interest or bug me.

1. Running is lumpy especially around 4,000 rpm and again at 6,000 rpm, the bike feels it needs to be 'opened up' to clear the issue.

2. The engine note will change after a little while, losing some of the booming sound track. When this happens the throttle response goes away almost entirely. You have to be quite heavy handed to get things back to normality.

BTW I have been using Sport mode with the default settings. It has also been quite cold here in the UK last weekend so the bike was running quite cold. c.65 degrees C at times but the problem still existed when the bike got warmer c.75 degrees C to 85 degrees C.


Any help ideas or observations welcomed. Does anyone think that the previous owner disconnected the O2 sensor for a reason? Are they linked?

Many Thanks

James
 
Hi James,

Are you sure you are not finding the character of the bike a bit different?

I was an inline four person all my life and when I got my Panigale first I had a weired feeling and was depressed about the feel and character of the bike. However, a few weeks down the road I got used to it and love the way it rides now. It loves to be reved and boy it is an awesome machine!

The upmap made a massive difference as well. Did you ride your bike before the UpMap install?

Cheers,
mali
 
There was a flat spot around 4K but an Upmap released in November last year made a world of difference.

Have you had this applied?

Al.
 
My guess too is that the upmap has not been installed, despite what the dealer said.

The engine note could also be down to the flapper valve which kicks in around 4k too I believe.
 
Hi Guys,

Thanks for your comments.

mali - I understand what you are saying but I've ridden a 1000cc V-twin for the last two years (TL1000 engine) and I do accept (and love) that the twin has a certain character over an in-line 4. I'm not looking for silky smooth, this just feels a bit wrong.

alb + Marcbc - I believe that the latest UpMap was applied before I received the bike but I'll have a word with the dealer.

Marcbc - I thought that it might be to do with an exhaust flap, I guess this is some EU efficiency reg, do you know if the Termi system does away with the flap?

Thanks

Jim
 
Hi Guys,

Thanks for your comments.

mali - I understand what you are saying but I've ridden a 1000cc V-twin for the last two years (TL1000 engine) and I do accept (and love) that the twin has a certain character over an in-line 4. I'm not looking for silky smooth, this just feels a bit wrong.

alb + Marcbc - I believe that the latest UpMap was applied before I received the bike but I'll have a word with the dealer.

Marcbc - I thought that it might be to do with an exhaust flap, I guess this is some EU efficiency reg, do you know if the Termi system does away with the flap?

Thanks

Jim

Slips remove servo and disable valve.

Fulls remove everything.
 
Like they said before, exhaust valve kicks in from about 4,000 rpm to 5,000 rpm. I sat in that rpm range one day just to see what would happen if I stayed there... Bike nearly stalled out. I shift up or down a gear to stay out of the 4-5k rpm range. You can disconnect it without installing a pipe, I talked to Dave from Rexxer USA and he assures that it will not affect your power, it has been tested connected and disconnected with the stock system.

As for the lumpiness at constant throttle it won't really go away til you have it dyno tuned and all the restrictions removed. Main thing is to get rid of your emission restrictions and have it retuned, and/or buy an aftermarket pipe and tune it. That will make it run a bit better. With a stock system I just keep it in a low gear through town, throttle is very sensitive even in sport mode. I usually cruise in 1st from 0-25 mph, 2nd from 25-35 mph, and 3rd from 35-45 mph and up. Keeps the bike from wanting to jolt forward all the time and keeps me out of the range with the exhaust valve. Hope this helps
 
James.
Welcome to the world of Ducati :)

All you are experiencing will be down to the flapper valve in the exhaust system.
Yes the latest up-map will help to resolve this feeling and improve the overall fuelling.
The Termi can option removes, as has been said, the flapper valve motor and has a blanking plug for the wiring.
The full system (essential must have accessory) replaces all the pipework too ;-)

Ride it had through the gears and keep the motor singing is also a good remidy !!!!!
 
Cheers for the input guys.

Desmo Dave, I agree the bike seems to be happier the harder its ridden. Unfortunately, ban inducing speeds are all too achievable! Must get it on the track..... Brno already booked in July.

I've seen quite a bit of talk about disabling the flapper valve in the standard system. Seems pretty easy to do and cheaper than Termi's so I'll give that a go first I think. Having just purchased the bike a new exhaust might have to wait a few months.
 
My guess too is that the upmap has not been installed, despite what the dealer said.

The engine note could also be down to the flapper valve which kicks in around 4k too I believe.

+1 - also get the 41T
 
The "UpMap" is the map switching that is done using the stick that comes with the slip-on or full system.
The dealer cannot "Install the new UpMap" unless you have the stick.
This is a bike with standard exhaust, "No stick".

The map update from 0204 to 0205 that the dealer did on this bike will be the latest as it was released in Dec 2012.

The change from 0204 to 0205 was to address problems with the mapping for people with the slip-on or full system, the change from 0204 to 0205 will not be noticed unless you have changed to one of the UpMap modes.
 
Can you go back to the Ducati dealer and ride their Demo 1199? Hopefully it feels the same, and is simply something to get familiar with.
 

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