Re: KTM Duke 390 - Owners Reviews and Experiences

Anyone here tried 180 rear tyre on duke 390..!
Just wanna know how it looks and effect on handling..!

I've got some spare tyres of my ninja 650 of 160 & 180.. Wanna try them on duke

Re: KTM Duke 390 - Owners Reviews and Experiences

Hi. Has anyone tried installing an aftermarket filter on their 390s. BMC or K&n. Any reviews on either. Performance / long term consequences etc? Cheers!

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Re: KTM Duke 390 - Owners Reviews and Experiences

I've seen photos of people who have installed aftermarket filters on their Dukes, but haven't really come across anyone personally. With my little experience with aftermarket filters Simota and BMC, in the long term it's isn't that much of worthwhile investment, yes you get improved throttle response, and good initial, but long run, I don't prefer them much. I would use them on a carburetted engine as opposed to a fuel injected one, don't ask me why, but I've always been judgmental about them, so no matter what pros and cons the either of them have, after market filter goes to a carby and the stock stays on the FI.

If horsepower is your priority, my suggestion would be to spend your moolah on a good exhaust system, especially a free flow, that'd be even more worthwhile and the right decision. All these filters are just a moot-point, not really offering beyond very very modest performance bump, I won't even call it a performance, it's just plain physics.

Cheers!
VJ

Re: KTM Duke 390 - Owners Reviews and Experiences

Forgive me if I'm wrong, but isn't a free flow exhaust just as damaging and point less as a high performance air filter, when considered in isolation? A High performance air filter allows the engine to breath in easier, take in air at a greater velocity and in greater amounts. The free flow exhaust allows it to push out its exhaust gases quicker and more efficiently. But a filter alone doesn't make sense because the engine doesn't know what to do with the extra air it gets now. Same way the engine cant do much with the better exhaust flow as well. Yes it gives better throttle response and low end performance, but in most cases all this is accompanied by a loss of top end.
But when both of these are combined with an ECU remap to teach the engine what to do with its new found abilities, we will surely get the much greater performance we strive for. Think about it, even the might Daytona 675 needs an ECU remap after installing the Arrow slip-ons. Both air filter and exhausts mess with the AFR, and unless you plan of compensating for that change as well, these mods won't do as much as they should and would have adverse effects on engine life too.
This is just my opinion and I know no one here knows me. Sorry if this isn't my place to express. I have never owned any vehicles, but I'm a nerd and this is what I have learned after a lot of reading and asking. I'm here cause I have a plan of owning a 390 or a 200 Duke soon and couldn't keep myself shut when I saw this question. Sorry. 😅

Re: KTM Duke 390 - Owners Reviews and Experiences

Not essentially true. Stock ecu can adjust the AFR to an extend with the help of oxygen sensors. I have a ffe installed on my 390. It runs fine and as far the mixture is rich.

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Re: KTM Duke 390 - Owners Reviews and Experiences

[MENTION=14435]backlash4u[/MENTION], so wouldn't the air box have similar sensors to deal with the extra amount of air coming in? I'm asking cause I know about the sensors, but they are usually short range sensors. They are there to make adjustments for the varying quality of fuel, changes in altitude and other factors that affect AFR. I never thought they would be enough to make proper compensation for the large changes that occur as a result of FFEs or filter changes. I'm not saying you are wrong, if anything I'd like myself to be wrong cause that would mean less expense for me if and when I get my bike. So, if you are right, I can go ahead with mods to the exhaust and not worry about a lean mixture, and think of a remap only if I want to extract the best out of that exhaust. Right?

Re: KTM Duke 390 - Owners Reviews and Experiences

Dude. I am not entirely sure either. I am saying this just coz my bike is like that. And i am not sure if the sensor is doing this. May be it was tuned that way from the beginning.

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Re: KTM Duke 390 - Owners Reviews and Experiences

Paid a visit to the KTM showroom today. The SA told me that my Duke will be arriving this evening. It's a 2015 model with the slipper clutch. He said there will also be a RC 390 in the godown and I can compare the 2 bikes and decide. Planning to do the same on Monday. Will pay the balance and register the bike so I can collect it on Tuesday.
Visited the spare parts section too to check out the prices of the accessories:
1. 36 PB00 10: Race Line Stickers - Rs.5490/-
2. 36 JG00 47: Winshield - Rs.2500/-
3. 36 JG00 58: Crash Pad Rear (Swingarm slider) - Rs.3270/-
4. 36 JG00 33: Crash Pad Front (Fork slider) - Rs.2220/-
5. 36 JG00 60: Handbrake Cylinder Cover (Front Disk resovoir) - Rs.3270/-
6. 36 JG00 61: Rear Brake Resovoir Cap - Rs.3530/-
7. 36 JG00 62: Oil Filter Cover - Rs.3034/-
8. 36 JG00 25: Tank Pad - Rs.1480/-
9. 71 0100 08: Tank Cap Sticker - Rs.2550/-
10. 75 3242 97: Bike Cover - Rs. 800/-
11. 36 PB00 27: Race Comp Gloves - Rs.6240/-
12. Paddock Stand - Rs.4250/-

Here are some of the accessories available from Dhaval Mahidharia
1. Fork and Swingarm Sliders (set of 4 pcs). Rs. 4250/- (Equivalent of items 3&4 from KTM)
2. Frame Slider pair. Rs. 6000/-
3. Quick Throttle. Rs.1000/-
4. Rear Brake Reservoir Cap Protector. Rs. 950/-

Following is available on Ebay
1. KTM DUKE 125 200 390 Custom Made Fuel Cap Sticker limited edition akrapovic - Rs.1500/-
2. KTM Duke 200/ Duke 390 RC 200/390Front Brake Fluid Cap - CNC Aluminum - Rs.1500/- (Equivalent of item 5 from KTM)
3. KTM Duke 200/ Duke 390 RC 200/390 Center Fork Bolt - Anodized - Rs.1200/-
4. Radiator Guard For KTM 390 Duke - Rs.3999/- (Also found some for Rs.2500/-)
5. RD Moto PH-01 Crash Protector for KTM Duke 200/390 - Rs.5300 - (Equivalent of item 2 from Dhaval)

Also checked out the Windshields from the Pulsar 150, 180 & 200 and the Discover 125 & 135 (fixed fairing). All priced between Rs.180/- to Rs.210/-. Will probably go with either the Pulsar 150 or Discover 135 as they seem to be the best bet. Will also check out the Yamaha FZ & SZR Windshields later. Then will pick up a pair of Apache RTR mirrors (I think they are Rs.450/-). Will also check out the RTR Tank Pad. Any other suggestions for Tank Pads?

Re: KTM Duke 390 - Owners Reviews and Experiences

Any idea about stock replacement filters? Even it does the same damage/effect less like performance filters?

On the move from my XSP

Re: KTM Duke 390 - Owners Reviews and Experiences

[MENTION=73103]joe_marvy[/MENTION], nope, you don't have to worry about the stock filters. The bike and it's FI system have been tuned with the stock filter in mind. And what ever difference there is between a new filter and and an old clogged up filter are probably well with in the range that the sensors can read and adjust for. Besides, what I mentioned is mere theory and science. Real-world effects are what really matters. I pitched in simply because this is a topic I too would like to understand a little better in the context of the Duke 390. Hope some one with experience can shine some light into this matter.

Re: KTM Duke 390 - Owners Reviews and Experiences

He meant stock placement filters that are made by K&n or BMC etc. They are the exact same size and fitment as stock ones but allow more air through than the oe KTM filter element with better dust filtration



This is the type I wanted to try on my bike too actually

The only review I could find on it is here send seems positive



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Re: KTM Duke 390 - Owners Reviews and Experiences

Ohh, I assumed that he meant OE filters. My bad. 😂 But then with any change in the amount of air taken in will have the same concerns I have expressed before. At the end though, a lot of people are doing these mods without any thought about ECU remaps and they seem to be doing just fine. So I guess it all comes down to what the individual is comfortable with. I for one would definitely look into the AFR and ECU with any mods that affect air flow.

Re: KTM Duke 390 - Owners Reviews and Experiences



I need to relocate the front number plate on the Duke like in the picture. Has anyone done it? What modifications are required.

Re: KTM Duke 390 - Owners Reviews and Experiences

True about the importance of managing AFR and the harmful effects of running lean. However international users of the D390/other bikes do the 15 minute idle whenever a performance part like a filter/FFE setup is installed. The assumption is that the ECU learns the new variables and adapts accordingly.

The ECU does probably compensate a bit which would explain how the bike functions properly at all different parts of our country and others irrespective of altitude, temperature and humidity. To what extent the auto adjusting is applicable is anybody's guess cos no company would release this kinda info.

The only reliable way would i guess therefore be a plug chop the check fuelling with the filter installed. With the Dukes spark plug setup this may be a PITA though :-)

Re: KTM Duke 390 - Owners Reviews and Experiences

Will be doing the PDI tomorrow. Then check out the Slipper Clutch Duke 390 vs the Non-Slipper Clutch RC390 and take the final call (though I'm 90% certain I will pick the Duke). Then pay the balance and try and register the bike tomorrow itself. Hopefully will collect it on the auspicious day of Akshaya Tritiya (though it's not relevant to me) as I have heard that a lot of people take delivery of vehicles on this day.