Bikesure_adrianflux

Lumpy behaviour on a 2008 696

Foggy

Foggy

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May 4, 2024
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Diss
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M696
I have a 2008 696 Monster and, although I love the bike, I find it lumpy at speeds below 30mph such that I need to ride it in a lower gear than I would normally. I have read that this is normal because of the big pistons and gearing which are designed for mid to high rev performance. Apparently this lug and surge at low revs has been resolved in later models.

Does anybody know which year Ducati introduced smoother running Monsters in order to overcome this problem or did it just not happen ?
 
What engine rpm are you finding the issue? Some people fit 14t front sprockets that moves it. You could ditch any lamda sensors and possibly remap it around 3k rpm which is the lean area.
 
Darren69 said:
What engine rpm are you finding the issue? Some people fit 14t front sprockets that moves it. You could ditch any lamda sensors and possibly remap it around 3k rpm which is the lean area.
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Hi Darren, thanks for the reply. It tends to feel snatchy under 3k rpm .... is it because the 2008 model has basic fuel mapping ? I don't really feel qualified to fiddle around with sprockets and remapping though so I was hoping to find out when Ducati resolved it. I am hearing 2010 models onwards don't have this problem .... is that correct ?
 
The 90 degree V twin is inherently lumpy, I've got 3 of them and they all do that sir - well, except the near 50 year old Guzzi but that's because it has a hugely heavy flywheel and less transmission lash.

My Monster is the worst of the 3, has a very light flywheel and isn't really happy under 3k whilst being positively miserable around 2.5k.

Definitely no 4th gear in a 30...
 
Foggy said:
Hi Darren, thanks for the reply. It tends to feel snatchy under 3k rpm .... is it because the 2008 model has basic fuel mapping ? I don't really feel qualified to fiddle around with sprockets and remapping though so I was hoping to find out when Ducati resolved it. I am hearing 2010 models onwards don't have this problem .... is that correct ?
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The snatchiness around 3k is caused by leaness usually bc that is at what engine speed the emissions are tested and being a v twin it doesn't like it and will 'hunt'. My S4 was really bad at 30mph so I had a custom map done giving a bit more fuel and it solved it completely. Idk if they resolved it in later models but changing the gearing will not solve the issue but makes it better by moving it to a slower speed.
 
Darren69 said:
The snatchiness around 3k is caused by leaness usually bc that is at what engine speed the emissions are tested and being a v twin it doesn't like it and will 'hunt'. My S4 was really bad at 30mph so I had a custom map done giving a bit more fuel and it solved it completely. Idk if they resolved it in later models but changing the gearing will not solve the issue but makes it better by moving it to a slower speed.
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OK so now I’m intrigued that a custom map solved it completely which would be great ….. I need to find somebody who can do this remap, would it be a Ducati dealer/specialist mechanic etc ? What do I ask for ? Roughly how much does it cost ? If the remapping is making it richer how does this comply with EU emissions and MOTs etc ? I have Termis too which were fitted when I bought the bike so not sure if this requires remapping and whether the previous owner had done it.
 
Dukedesmo said:
The 90 degree V twin is inherently lumpy, I've got 3 of them and they all do that sir - well, except the near 50 year old Guzzi but that's because it has a hugely heavy flywheel and less transmission lash.

My Monster is the worst of the 3, has a very light flywheel and isn't really happy under 3k whilst being positively miserable around 2.5k.

Definitely no 4th gear in a 30...
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Yes sounds like mine and that’s useful to know thanks. I must admit I thought there was a problem with it at first.
 
Foggy said:
OK so now I’m intrigued that a custom map solved it completely which would be great ….. I need to find somebody who can do this remap, would it be a Ducati dealer/specialist mechanic etc ? What do I ask for ? Roughly how much does it cost ? If the remapping is making it richer how does this comply with EU emissions and MOTs etc ? I have Termis too which were fitted when I bought the bike so not sure if this requires remapping and whether the previous owner had done it.
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Cornerspeed did mine over 10years ago but Idk if he still can since he does not have the dyno anymore. Took him an hour or 2 plus the PCIII. I didn't think they test emissions at MOT? Never had any of mine tested so idk.Slip on cans don't usually require a remap per se but may benefit from one as they may make it a bit leaner but that can usually be corrected with a base O2 trim adjustment. Usually with new Termi you get a new ECU to install with it but since I don't know much about Gen 2 bikes I cant confirm that is always the case for those but the older ones did. Iirc it comes up with 'Race' on the dash display if it has the Termi chip installed.
 
Darren69 said:
You might want to consider something like these first if not already fitted. It may improve things before going down a more costly route.

ebay.us

Oxygen lambda o2 sensor eliminator kit Ducati Monster 1100 EVO 796 797 696 5213008250390 | eBay UK

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OK thanks for all the info Darren, I'll take a look. Much appreciated.
 
Darren69 said:
You might want to consider something like these first if not already fitted. It may improve things before going down a more costly route.

ebay.us

Oxygen lambda o2 sensor eliminator kit Ducati Monster 1100 EVO 796 797 696 5213008250390 | eBay UK

Find many great new & used options and get the best deals for Oxygen lambda o2 sensor eliminator kit Ducati Monster 1100 EVO 796 797 696 at the best online prices at eBay UK! Free delivery for many products!
ebay.us
Click to expand...
Has anybody ever fitted one of these kits which eliminate the o2 sensors ? Just wondering if the bike is smoother at low revs and if there is any risk of damaging the ECU ? Are the lambda sensor connectors accessible by removing the tank ?
 
Foggy I’ve just literally replaced my o2s with those smart moto plugs. Easy job. I’d imagine your o2s are somewhere obvious in the exhausts with easy access.

Just check if the bypass plugs are suitable for your bike, I vaguely remember something about not working with standard ecu’s!

Smart moto are an excellent company tho and if you’re at all unsure just email them. Very very helpful.
 
Ron1000 said:
Foggy I’ve just literally replaced my o2s with those smart moto plugs. Easy job. I’d imagine your o2s are somewhere obvious in the exhausts with easy access.

Just check if the bypass plugs are suitable for your bike, I vaguely remember something about not working with standard ecu’s!

Smart moto are an excellent company tho and if you’re at all unsure just email them. Very very helpful.
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Thanks Ron, good to have a recommendation, I'll certainly contact them. Apart from not working on standard ECUs I am more concerned about damaging the ECU ... has anybody told you that this a possibility ?
 
no one has ever told me it would damage the ecu. I hope not because mines are fitted and the bike is in use 😂😂😂😂. Many people on here use them.
 
Ron1000 said:
no one has ever told me it would damage the ecu. I hope not because mines are fitted and the bike is in use 😂😂😂😂. Many people on here use them.
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Haha that's good to know. So what was the problem you were getting before you fitted the o2 eliminators and how has it improved ?
 
Totally different to your lumpiness issue. My bike has developed a misfire and I’m trying diagnose it, o2 sensors came under suspicion so they have been removed.
 
As far as I know, Nelly at Cornerspeed does a postal service REXXER remap (he certainly did a couple of years ago). You send him your ECU, he sends it back with the new map installed. This is likely to cure your issue, also wort ensuring that the throttle bodies are synchronised.
 
I have a 2009 696, standard sprockets and ecu but I have aftermarket slip on exhausts and have found the following through the last 15 years of owning it.

I do not experience any surging with it at all. I do ride above 3k revs but do occasionally find myself down to 2k in town. No lumpyness above what would be expected because it is a v twin.

If yours is hunting or surging then I would suggest synching the throttle bodies as the surging can be an indication they could be out.

Are your spark plugs in good condition and gapped correctly?

Alternatively try running it on E5 fuel (98 ron) and see if the lower ethanol content helps. These bikes are not mapped for higher octane fuel but I find mine runs far better on it.
 
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