Lextek system - KTM Duke 390 Forum
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post #1 of 31 Old 01-12-2020, 08:46 AM Thread Starter
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Lextek system

Just test ride the bike after doing brakes & oil n filter, the fuelling is bloody terrible! (This was the first time it’s been ridden since purchase) I do have the original exhaust that I could try but I’m guessing the issue is because of the free flowing system? What’s the easiest fix, not chasing power just want smoothness
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post #2 of 31 Old 01-12-2020, 12:06 PM Thread Starter
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Definitely looks lean.
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post #3 of 31 Old 01-12-2020, 01:47 PM
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Whatís the easiest fix, not chasing power just want smoothness
Put it back to stock
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This isnít my first rodeo, but it is the first one with real clowns...
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post #4 of 31 Old 01-12-2020, 02:19 PM
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either get an Rapid Bike Easy or something like that or get an actual tunable piggy back. These bikes are already CRAZY lean from the factory, you will need something to add more fuel for sure.

-2016 KTM 390 Duke-
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post #5 of 31 Old 01-12-2020, 02:54 PM Thread Starter
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Quote:
Originally Posted by Garry&Deb View Post
What’s the easiest fix, not chasing power just want smoothness
Put it back to stock
Who wants a whisper quiet bike? 😂
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post #6 of 31 Old 01-12-2020, 03:22 PM Thread Starter
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Originally Posted by 1jzsupra View Post
either get an Rapid Bike Easy or something like that or get an actual tunable piggy back. These bikes are already CRAZY lean from the factory, you will need something to add more fuel for sure.
I take it they are all pretty much the same? I’ll probably stick a K&N filter in too but that’ll be as far as timing goes
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post #7 of 31 Old 01-12-2020, 05:24 PM
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Lextek system

Stock or piggyback. You canít ride it as is. Well you can but it wonít be for long. But people moan about stock not being smooth at lower revs so if smooth is your criteria then it looks like only one course is open if you want to keep the bike.

General consensus appears to say no improvement from K&N so may as well stay stock filter.
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post #8 of 31 Old 01-12-2020, 05:44 PM Thread Starter
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Stock or piggyback. You can’t ride it as is. Well you can but it won’t be for long.

General consensus appears to say no improvement from K&N so may as well stay stock filter.
Agreed, bike won’t be ridden until something is done. Thanks for the tip about K&N, I’ve just reading someone’s review of the DNA filter, Sounds like it works well
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post #9 of 31 Old 01-12-2020, 07:15 PM
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Where are you located @Garry&Deb ?

I've been very happy with Dynojet Power Commander and the requisite map for your configuration.

Makes a world of difference in reliability and can be tweaked further as desired for additional mods in future etc.

Got mine originally from @cjwells at Commonwealth Moto.

2016 Duke 390 - Lowered 45mm F&R with T-Rex Racing link and kickstand, YSS MZ506 shock, RC390 fork springs & custom spacers, DynoJet quickshifter and PCV, Gray Area KTM airbox, open lid, inverted K&N filter, Werkes pipe, TYGA header, 16T sprocket, 320mm Galfer rotor and HH pads, XHP50 LED headlight, Vizi-tec SupaBrake II, Renthal grips with HeatDemon heaters, lever guards, Ride It Moto levers, eBay sliders, rear spools and rearsets, DIY tail tidy, HD radiator, F&R shock guards, OBD2 dongle

Last edited by CDN Duke; 01-12-2020 at 07:19 PM.
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post #10 of 31 Old 01-12-2020, 07:27 PM
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K&N filters work great, especially when setup like this:

https://r.tapatalk.com/shareLink/top...ink_source=app


3D-printable models for Airbox Lids & Tank Bag https://www.ktmduke390forum.com/foru...ad.php?t=38937

2016 Duke 390 - Lowered 45mm F&R with T-Rex Racing link and kickstand, YSS MZ506 shock, RC390 fork springs & custom spacers, DynoJet quickshifter and PCV, Gray Area KTM airbox, open lid, inverted K&N filter, Werkes pipe, TYGA header, 16T sprocket, 320mm Galfer rotor and HH pads, XHP50 LED headlight, Vizi-tec SupaBrake II, Renthal grips with HeatDemon heaters, lever guards, Ride It Moto levers, eBay sliders, rear spools and rearsets, DIY tail tidy, HD radiator, F&R shock guards, OBD2 dongle
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