K&N vs DNA - KTM Duke 390 Forum
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post #1 of 46 Old 10-18-2016, 08:49 AM Thread Starter
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K&N vs DNA

So this morning the spare DNA filter I bought from @640 here on the forum arrived . I let 640 know that it arrived and with his phlegmatic British humour said that I should do dyno tests to compare them . Does anyone really expect me to spend 60 euro on dyno tests to compare air filters ?
I must say I stay well clear from these dyno tests as I believe there is one major problem with it.

This will only embark me on a never ending quest to get more HP out of bike and believe me I don't really need any more sources to get me to spend money on bike mods : @Diploman here is more than enough .

Furthermore ,where I live the max and min temperature difference within the same day is often more than 15 degrees celsius . Meaning that the oxygen rich air when cooler gives the bike more HP immediately where the auto adjusting piggyback ECU like my Dimsport Rapid Bike EVO has no time to adjust when hotter and oxygen poorer air renders the bike less powerful . So Dyno bench power is one thing ... actual day to day power output can vary .

Guess we should fit and intercooler ...
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post #2 of 46 Old 10-18-2016, 09:05 AM
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Absolutely, Yves! And once you have fitted the intercooler, that is the first step to adding a turbo; and with the turbo you then will have to fit a stunt bar at the rear to prevent wheelies past vertical; then you will need new footpegs...........

Cheers, Will

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post #3 of 46 Old 10-18-2016, 09:12 AM Thread Starter
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Absolutely, Yves! And once you have fitted the intercooler, that is the first step to adding a turbo; and with the turbo you then will have to fit a stunt bar at the rear to prevent wheelies past vertical; then you will need new footpegs...........
STOOOOOP !! It really goes to show that Machiavelli was a diplomat I suggest you change your username to " Il principe "
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post #4 of 46 Old 10-18-2016, 09:50 AM
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Quote:
Originally Posted by Trimapa View Post
Does anyone really expect me to spend 60 euro on dyno tests to compare air filters ?
No.

Based on the amount of money you must have spent on (hardly essential if no doubt hugely impressive) brake upgrades I at least half expect you to get your OWN dyno.

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Originally Posted by Trimapa View Post
Dyno bench power is one thing ... actual day to day power output can vary .
That's just being boringly rational about it.

What we want is an air filter shootout

Just tell me that the DNA aces it by a whopping 0.03bhp and then I can know I support the best team* - YAY !



*while conveniently overlooking the fact that my DNA filter is different to yours......
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Less is more - You can only use 150hp .001% of the time, but you can use 150kg 100% of the time ...........


2015 390 Duke / 2001 KTM 640 Duke2 / 1994 DR350 (in bits)
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post #5 of 46 Old 10-18-2016, 10:05 AM
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The real question is open or closed lid airbox? ;-)
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post #6 of 46 Old 10-18-2016, 10:29 AM Thread Starter
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No.

Based on the amount of money you must have spent on (hardly essential if no doubt hugely impressive) brake upgrades I at least half expect you to get your OWN dyno.



That's just being boringly rational about it.

What we want is an air filter shootout

Just tell me that the DNA aces it by a whopping 0.03bhp and then I can know I support the best team* - YAY !



*while conveniently overlooking the fact that my DNA filter is different to yours......

Dear Alan ,

Even you are right , I implore you to refrain from reminding me what I may have spent on brakes , suspension , engine , safety and a panoply of futile cosmetic upgrades . Worse , more upgrades in the works : the TSS slipper clutch will be with me sometime next week and as I was a little bored the other day I stumbled on a carbon chain guard made in Hull on Ebay and could not stop myself of clicking on the "buy now " button . Lately I have been fooling myself by justifying purchases in GBP as the exchange rate is a little better what it used to be .


PS: Yes , I do have my own dyno and sitting on it as I'm writing this .
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post #7 of 46 Old 10-18-2016, 10:31 AM Thread Starter
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The real question is open or closed lid airbox? ;-)
No question ... open ! as long you have the piggyback ECU / map to go with it
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post #8 of 46 Old 10-18-2016, 12:24 PM
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Here's an interesting tidbit from the RC390 forum about these filters...

ecu Flash? - Page 3
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post #9 of 46 Old 10-18-2016, 01:01 PM
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It's not for nothing that Chad Wells is widely considered the foremost 390 tuner in the NA region. He knows whereof he speaks.
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Cheers, Will

"If you don't know where you're going, you might wind up somewhere else."
--Yogi Berra

2015 390 Duke
1980 Moto Guzzi V50 II cafe racer
1984 Moto Guzzi SP 1000
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post #10 of 46 Old 10-18-2016, 02:41 PM Thread Starter
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It's not for nothing that Chad Wells is widely considered the foremost 390 tuner in the NA region. He knows whereof he speaks.
They have a pretty nice piston and cams kit for the duke 390 on offer . Stumbled upon that when shopping for the Yoyodyne slipper clutch : They have a very competitive price for that clutch . I sent 2 mails to inquire about shipping manifests and invoicing but never got a reply from them .
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