KTM 790 Duke Forum banner

Status
Not open for further replies.
1 - 20 of 128 Posts

·
Elvis has LTB
Joined
·
19 Posts
Discussion Starter #1
Finding the throttle incredibly snatchy

Mirrors move out of position when travelling above 60mph

Travelling at any speed below 35mph is horrible as the bike surges up and down the rev range

Anyone else finding their bike the same?
 

·
Super-Moderator
Joined
·
367 Posts
Hey Depster, sorry to hear about the issues.

Are you running stock mirrors on the stalks?

I haven’t had the issues you mention, other than it’s being slightly snatchy down low, but only really in sport/track mode.

Some have had success with a booster plug and other have said it seems to be more prevalent before the first service.

https://www.boosterplug.com/shop/boosterplug-ktm-790-747p.html

Apparently there’s firmware 0.20 on the way which is supposed to help too.
 

·
Elvis has LTB
Joined
·
19 Posts
Discussion Starter #5
Hey Depster, sorry to hear about the issues.

Are you running stock mirrors on the stalks?

I haven’t had the issues you mention, other than it’s being slightly snatchy down low, but only really in sport/track mode.

Some have had success with a booster plug and other have said it seems to be more prevalent before the first service.

https://www.boosterplug.com/shop/boosterplug-ktm-790-747p.html

Apparently there’s firmware 0.20 on the way which is supposed to help too.
Is the booster plug available in the UK?

Stock mirrors seem really loose at the mirror head and move far too easily.

Have only used Street mode so far.
 

·
Registered
Joined
·
18 Posts
My left mirror turns inwards with the wind when I hit 200kmh, although I am not actually worrying much about them at 200 clicks. 🙃
 

·
Super-Moderator
Joined
·
367 Posts
I haven't needed a booster plug, but believe @anotheronetoday is UK based and has purchased and fitted one so should hopefully be able to assist on where to buy.

From what I've read about them it's a fairly quick painless install.
 

·
Registered
Joined
·
91 Posts
Im pretty sure the Boosterplug is a Dutch product.

You can buy one here https://www.boosterplug.com/shop/boosterplug-ktm-790-747p.html

fitting the Boosterplug takes 5 minutes. Undo the two screws holding the front seat on and there is the air sensor, unplug the air sensor and plug in the Boosterplug, dump the boosterplug sensor in the space under the back seat, replace the front seat, job done.

Takes about 5 mins, you wont even have time to crack a beer!

I actually just bought another to fit to the 390 Duke i just got for the missus :)
 

·
Wish You Were Here
Joined
·
619 Posts
hi
to fit neatly takes a bit longer than this I would allow 30-45mins
Remove front seat and to mount booster plug and probe remove petrol tank plastic outer cover
very easy to access the required connector located on top of airbox at the back of petrol tank
I wanted to mount temp probe at headlight location to avoid engine heat
I mounted booster plug onto inner petrol tank below the welded seam fitted very well and completely hidden once the petrol tank plastic outer cover is replaced
I still found the temperature probe lead to be a little short and mounted it to the back edge of the LHS for leg

hope this helps
 

·
Registered
Joined
·
91 Posts
Yeah its a shame the probe lead isnt a few inches longer to get it up and under the dash. The main thing is to have it not touching anything metal like the frame that might conduct heat, keep it away from anything that gets hot like the radiator or cylinder head and to also keep it out of direct sunlight.
 

·
Wish You Were Here
Joined
·
619 Posts
couple of recalls on my 790 main one was changing the water thermostat also had software update from 17 to 20 today
the bike did run smoother at low rpm but due to other mods on my bike this perhaps is not so conclusive for standard bikes
 

·
Wish You Were Here
Joined
·
619 Posts
I cable tied the probe to the clutch cable running up the inside of the LHS fork leg.
the outdoor temp probe is mounted in bottom of headlight module that would have been ideal place
 

·
bought a 1290 SDR
Joined
·
87 Posts
Hi all,still running my 790 in and throttle is a bit hunty low down on constant throttle openings but not to bad. Ive had bikes which have been just as bad and some even worse.Its just one of those things with all the emissions crap these days.
Not had a problem with the mirrors,just make sure the locknut on the base of the mirror is nipped up nice and tight.
Only real issue is a difficulty getting into neutral when at a standstill but as I said I am still running in, so hopefully the gearbox will loosen of a bit.Anyone else out there had the neutral problem?
Fitted an Evotech rad guard yesterday.Excellent bit of kit if a little expensive but with the usual Evotech quality.Tidies up the look of the rad to.
Will sign of for now.
Ride Safe:)
 

·
Elvis has LTB
Joined
·
19 Posts
Discussion Starter #16
Hi all,still running my 790 in and throttle is a bit hunty low down on constant throttle openings but not to bad. Ive had bikes which have been just as bad and some even worse.Its just one of those things with all the emissions crap these days.
Not had a problem with the mirrors,just make sure the locknut on the base of the mirror is nipped up nice and tight.
Only real issue is a difficulty getting into neutral when at a standstill but as I said I am still running in, so hopefully the gearbox will loosen of a bit.Anyone else out there had the neutral problem?
Fitted an Evotech rad guard yesterday.Excellent bit of kit if a little expensive but with the usual Evotech quality.Tidies up the look of the rad to.
Will sign of for now.
Ride Safe:)
Its the head of the mirror thats very loose. Base is really tight and you cant move the mirror stem.
 

·
Super-Moderator
Joined
·
367 Posts
Fitted an Evotech rad guard yesterday.Excellent bit of kit if a little expensive but with the usual Evotech quality.Tidies up the look of the rad to.
how's the rad guard to fit? is it literally clip on and screw or does anything else have to be removed?

I've just hit 1000 miles, and everything is bedding in nicely now, gears are smoothing out and the fuelling issue is barely noticeable now, even through the city in sport mode.

Seriously considering some new calipers though, possibly the m50's, coming off the street triple r to these has me a bit worried as they are just a bit spongy :(
 

·
Registered
Joined
·
13 Posts
Hi all. I've done just about 750 miles on mine now. I too have been suffering with the snatchy throttle but it is improving as I click the miles off. Another thing I was worried about was the chain, according to the manual it's very loose. I told mechanic when I had the first service done about it and he said it was fine. Anybody else think the chain is loose. P.S. This is my first Ktm. Cheers
 

·
Super-Moderator
Joined
·
367 Posts
You don’t want the chain too tight under load, with rider weight, top of the chain should still have about 15-20mm clearance from the swingarm.
 

·
Registered
Joined
·
13 Posts
Hi Owl. Thanks for your reply. With me sitting on bike that's about how much clearance the chain has. It's not very clear in the manual about the chain tension. It doesn't mention having rider sat on the bike.
 
1 - 20 of 128 Posts
Status
Not open for further replies.
Top