S2R1000 surging

[mflas]

So my bike has 1200 miles on it and when I brought in for the 600 mile service I mentioned it but since then it has gotten worse and today it was bad.* Between 3800 rpm and 5300 rpm when the throttle is held at a steady rpm the bike engine seems to surge.* Has anyone had a similar experience?* I made an appointment to take it to BCM next week (120 miles away), but they said this is the first anybody has complained of something like this.* I'm a little concerned because there is not* much tuning you can do with the S2R1000 ECU.* Any thoughts...

PS My bike has stock exhaust, air filter, and ecu.

[MotoMongoose]

Sounds familiar. I've had similar trouble with my S2R 800, and it is a temperature related problem (maybe altitude too). See my post here:

http://www.ducatimonster.org/smf/ind...c,48002.0.html

(Hopefully this link works. I don't speak HTML too well.)

[S4R4FUN]

Surging is indicitive of a lean condition. If you are still under warranty, let BCM sort it out (and they will)...

If not, get your mods done, get a PCIII and then take it to BCM for a Dyno Tuning... [thumbsup]

[StacK]

Link does not provide an answer but here's my experience... I noticed this happening to me after I picked up my bike from the 600 mile service ('06 S2R). The shop had removed my carbon canister but instead of putting a M5 bolt to plug the throttle bodies they y'd the hoses together and stuck a bolt in the end of the hose. I removed the hoses and bolts, pluged the throttle body holes with M5 bolts and have not had a problem. It's been in the mid-80s and the bike temp is running around 210 since I've done this and I havn't had a problem in the 150+ miles I've put on this weekend.

yeah, if there was a leak........
and a legnth of hose changes the volume of the intake.
And y ing the hoses makes any vacuum differential exponentially worse.

[bunner74]

My S2R1000 does something very similar. Light throttle held constant between 3000-4500 rpm the bike hesitates a little. Under normal acceleration, its very smooth with no surging or hesitation. I figured it was just a characteristic of the motor. Bike is stock accept for removal of emissions canister.

[mflas]

I don't know but the removal of the emission canister seems to be the only common connection. It hesitated ever so slightly prior to the 600 mile service...but now it really sucks...

[FastM]

Sync the throttle bodies.

Originally Posted by bunner74

My S2R1000 does something very similar. Light throttle held constant between 3000-4500 rpm the bike hesitates a little. Under normal acceleration, its very smooth with no surging or hesitation. I figured it was just a characteristic of the motor. Bike is stock accept for removal of emissions canister.

this is a problem with fuel/air and or timing. when I get the pat answer from working on monsterone6's bike I will tell the DML world.

[Desmo Elmer]

when I get the pat answer from working on monsterone6's bike I will tell the DML world

Boy, I'd love to hear your fix...

Could this theory from FAQ #8 on FIM's site have any relationship to this?

http://www.fuelinmoto.com.au/

What ECU does the 1000DS motor use?

Could this be an issue with a 5.9 ECU?

I have a stumble on my M800 at 3500 - 4000 constant throttle. It's been on the dyno 3 times. Adding fuel in that range helps a bit, but it never goes away completely and my tuner says fuel/air is already richer than he'd like to go in that section of the map.