low end power

this sucks
just got a 06 duke with 3k on the clock it is bog standard ,bike runs spot on when giving it stick
the problem is wen sitting at around 4k in traffic any gear any speed ,it feels like it is running out of fuel ,it loses power then picks up ,then loses power and picks up and so on
bike sits at a constant revs and its not a twitchy hand ,it got me a cracker on a roundabout when it did this ,
is it down to the o2 censers and the cat ,or is this another issue
love the bike but cant handle this as have to do a lot of driving in traffic
any help will be appreciated .......Mac

most likely fueling issue due to o2 sensors... could be something else, but i'd start with disabling those. idealy disabled o2 sensors + pc3/tuneEcu remap, but disabling the sensors by itself should make things better already. cheers!

Motobox!

Will definitely cure your ills.

Hook the bike up to a PC and check the current map and settings with TuneECU.
Maybe the bike came with a restricted (French/EU) map? You will find out if you read the current map from the bike.
While you're at it disable EPC and O2 sensors and send the modified map back to the bike.
After that let the bike idle for 15 minutes (for ECU reset).

Yeah I'd go with disabling O2 sensors and check the throttle bodies are balanced. Where in the world are you based ? Do you have access to a TuneECU lead? I know WHUFC had one that he might not of sold yet. Ping him a PM.
Motobox would be a fab mod for your bike. As would my round Akra cans (will photograph this weekend when I whip them off to fit the full Evo System ) Those 2 things with my custom PCIII+Akra map combo will release the beast but in a beautifully controlled fashion

Its the 02s for sure! Get the tuneecu cable happening and download the tuneecu software http://www.tuneecu.com/ and turn all the pollution crap off.

well disabled the o2`s and its still doing the same thing.
absolutely sick to death of it ,even tried fitting a set of akra`s just to get rid of the cat ,but still the same
if it was a multi it feels like its running on 3 and feels the same if u open the throttle,
and it now stalls at just about every junction

I bet its the tps.. What's the voltages a cold full throttle and hot closed throttle

no idea its all new to me ,always had carb bikes in the past

still got the problem ,but worse,fitted akro slipons,pcIII and o2 eliminators,with akro map ,it is now worse ,from 3 1/2k to 5k,
at my wits end with this one,any help or advice welcome or a box of matches might help..............Mac

Do a search on BGC and follow my instructions. I've posted on this subject several times.

Also worth checking the fuel filter to make sure it's not clogged with shite. Your bike is a little older and this could very well be the cause.

The Motobox cures the snatchy throttle issues while providing more power throughout the rpm range but your issue sounds like fuel starvation. Injectors may need to be cleaned as well if bike has sat around for a year or so.

Start with the BGC then move onto the fuel filter if problem persists.

John

Hi The tune ecu cable is on way from Canada,so hopefully be about a week,the bgc was treated when i fitted the powercomander ,the bike is still under warranty ,so when the cable arrives thy want to have a look and their going to set the throttle and the tps,it feels like its the secondary flys shutting a bit when at constant speed at that revs then opening and shutting and so on ,dont know what the pros and cons are about removing them ,and no real answer on the site ,will run her low on juice and check the filters ,The thing is this doesn't happen all the time ,some days it has no problem then the next time its a pure bitch ,about 70%of the time it has this issue,its not what i expected from a bike with 4000 miles on the clock, ,,,,,Thanks ...............Iain

This is a long shot, but as you have a pc3, try checking the earth wire is tight on the negative battery terminal. A mate of mine had similar problems with his and we tried everything. Turned out it was only this.

Hope it gets sorted soon so you can get on and enjoy the beast!

edit just realised you had problems before pc3, still worth a shot if the connection is bad. Otherwise big grey connector for me.

Broken is right....you didn't mention it was intermitent. Pull the BGC apart again and follow my instructions. intemittent issues like this are typically caused by moisture in the BGC.

John

at last ,
got a phone call today from causeway ktm ,they plugged bike into there pc ,nothing showing up ,so they did the fuel pump pressure test ,bingo pump is only producing 1.6bar ,so new pump fitted and it now has 3.8 bar,Waite for call tomorrow to see if that has fixed the problems ,sounds good so far
he told me he`s had this issue with 3 pumps in the past 6 months !!

well 62klm drive back from bike shop to home ,all going well till around 45klm,and away we go again ,
bike will drive fine all revs even as low as 2500 in top ,but get to 4-41/2 and its a fu..ing dog ,drops power pics up drops and so on ,when it drops it sounds like some one has plugged the cans with something ,open the throttle and its flat till it clears itself .absolutely at my wits end with this ,moto box sounds good but will it sort this out ????,ktm mechanics have no idei whats going on, as the fuel pump was the only thing that seems to be wrong with it

I would check all of the connectors going to the injectors including the BGC. Dry and lube them with dilectric grease....I've covered this many times in this forum.

Also check the crank position sensor connector if you can. Sounds like the ECU is telling the plugs to fire at weird intervals which could cause erratic running you've described.

My buddy had the exact same problem and after drying out all of the connectors, problem was sorted. Not sure which connector it was though as they were all done at the same time.

Good luck and keep us advised.

well bike at bike shop for 3 days ,sorry we cant finde the problem ,
i suggested they remove the secondary flies for me ,
and bingo problem is gone,,but bike is running rich as fu.. with the akro map
dont know if this was the right move but seems to be working better.
suppose its dyno time now as bike has lots of black smoke and 2 ft flames on over run

Removing the seconday flies will not have sorted you initial problem. The bike will run stronger at lower and mid RPM with them removed but your original problem will still be present (maybe not manifesting itself at the moment but not sorted).

sounds like it might be what is called "Hunting" , i'm not sure exactly what that means but i've heard the symptom described and it's similar to your case. I think it's a fueling issue . When i got my 07 w/ 8K on clock Akras and map it ran very well but had the snatchy issue. Bought Hooligan box / SAS / Evap Can / o2 sensor / and brought to dyno - he immediately had the problem of bike not wanting to rev down below 3000 rpm. NEVER had that problem before ... It has to do with setting the throttle position and it fixed the problem with that and again idled 1500 rpm.

Just saying , no clue if has anything to do with your bike , i can only imagine when some of these specific settings aren't correct things can go wrong.

My bike runs like never before now - secondaries removed and silencers removed from Akras - and mapping .... Hope you get yours sorted cause the finished product is fun

johnny

ok so removing the secondaries has stopped the initial problem at the moment ,
so seems like they were over riding my throttle input ,and shutting down the power when they felt like it.alwase at the same point in the revs
so in theory is it a fueling issue ???
sitting in neutral with the throttle at 4k, the needle is not static ,seems fluffy,
blip the throttle and i get lots of black smoke and the od 2ft flame from it ????