15 minute idle ECU reset / engine running problems - KTM Duke 390 Forum
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post #1 of 31 Old 05-19-2015, 09:50 PM Thread Starter
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15 minute idle ECU reset / engine running problems

Shamelessly copied and adapted from another forum. If you have engine running problems, try this first.

It's good if you can solve several problems with one answer. Those who are interested, please keep reading:
- For those of you who must service your 390 when no KTM dealer is near.
- If you have unusually low gas mileage, and you think it’s because of your driving style, you should perform the following procedure.
- If your idle is too high or too low, this can procedure can help with this issue. Other positive results can be achieved for engines that die when you are stopped or at low RPM or have high idle.
- If you have to constantly rev the engine during cold winter starts just to keep it running, this procedure can help.
- If you have made any modifications to the input sensors, air intake or exhaust.

The solution may lie in the acquisition of new parameters. It may sound complicated, but it is not. The low cost is out of proportion to the possible improvement.

Prepare for the procedure:
- The fuel tank must have enough gasoline to complete the process.
- The procedure is to be performed outdoors as a safety precaution.
- Do it somewhere where it won't disturb your neighbours.
- The vehicle and the owner must be in a cool ambient temperature environment.
- A clock must be present.
- The bike must not be on its side stand, so sit still on it, or put it on a paddock stand with the side stand up.

What is to be done:
- The 390 is on a paddock stand and/or vertical.
- The engine must be cold.
- It should be a cool ambient temperature when performing the procedure.
- Start the bike and let it idle for 15 minutes.
- Do not touch the bike while it’s idling: Do not operate throttle or other functions.
- Do not let the bike idle for less than 15 minutes or more than 16 minutes.
- If the bike stops, restart the 15 minutes again.
- Should the procedure be incomplete or faulty, it must be repeated again 100% accurately or you can take it to the KTM dealer for a faster resolution.
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Last edited by malJohann; 05-19-2015 at 09:55 PM.
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post #2 of 31 Old 05-19-2015, 10:17 PM
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I have to ask MJ. Do you put any credence in this procedure ? After loading an aftermarket tune in my Mustang GT and noticing no change, I was instructed by the company to do the same procedure so the ECU could relearn.
WHAT ?

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post #3 of 31 Old 05-19-2015, 10:23 PM
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If this procedure actually works, it's genius. Magic Elixir!

Cheers, Will

"If you don't know where you're going, you might wind up somewhere else."
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post #4 of 31 Old 05-19-2015, 10:42 PM Thread Starter
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Quote:
Originally Posted by easyrider View Post
I have to ask MJ. Do you put any credence in this procedure ? After loading an aftermarket tune in my Mustang GT and noticing no change, I was instructed by the company to do the same procedure so the ECU could relearn.
WHAT ?
I do. Its a known KTM procedure and vehicles having learning ECU's are common these days.

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post #5 of 31 Old 05-19-2015, 10:45 PM
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Quote:
Originally Posted by Diploman View Post
If this procedure actually works, it's genius. Magic Elixir!
I know you're right Will.

Ciao JP

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post #6 of 31 Old 05-19-2015, 10:46 PM Thread Starter
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Quote:
Originally Posted by Diploman View Post
If this procedure actually works, it's genius. Magic Elixir!
Reportedly doing it this way is the "dirty" way of doing it, and it takes the bike about 500mi to get a final cut on its settings. Preceding the same procedure with an ECU reset by the KTM Diagnostic Tool is the "clean" way of doing it, and makes it possible for the ECU to learn the new settings quicker. FYI this is the exact procedure that your dealer would follow after for example they installed the approved Akrapovic and its related ECU remap.

Honda CBR400RR --> Suzuki Raider 150R --> Suzuki DR200SE --> KTM D390 with sauce
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post #7 of 31 Old 05-19-2015, 10:48 PM
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Quote:
Originally Posted by malJohann View Post
I do. Its a known KTM procedure and vehicles having learning ECU's are common these days.
That's good enough for me MJ.

JP

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2015 KTM 390 >< 2006 Vespa GTS250ie >< 2000 Aprilia RS50 Race Replica >< 2014 Mustang GT
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post #8 of 31 Old 05-19-2015, 11:28 PM
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I read somewhere that it's not necessarily a 15min idle that's required but that the fan has to switch on? (which incidentally happened at the 14 min mark. I continued on for a few minutes more)

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post #9 of 31 Old 05-19-2015, 11:52 PM Thread Starter
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Originally Posted by GeO View Post
I read somewhere that it's not necessarily a 15min idle that's required but that the fan has to switch on? (which incidentally happened at the 14 min mark. I continued on for a few minutes more)
Which would be misinformation, you have to switch off between the 15 and 16 minute mark, many choose 15:30. The last time I did it the fan came on at 7 minutes, which might be ambient temperature / thermometer related, but who knows?!
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post #10 of 31 Old 05-20-2015, 02:07 AM
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I've done this previously and it gave me good results for a few weeks, then the bike returned to it's former misbehaving self at low revs.

I'm going to try this again this evening seen as I haven't done it since the filter and re map.

And yes, the fan kicking in will be temperature related.
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