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HARLEY: Still runs like crap after Dyno tune

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Old 12-16-2018, 09:30 AM
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Default Still runs like crap after Dyno tune

Long story short, took 103 to a 107, ported stock TB also. Could not tune out a hiccup at around 2800 rpm when cold. Once hot it’s not there. Make a stop and bike cools and it’s there again until it gets back up to temp. Took it to the only close dyno (a dealer) after the break in miles. . The dyno smoothed out the curves some but did not get the hiccup out. I have a short cold start data file recording from a SEPRT. Is there anyone that could look at it to point me in a direction to go? Dealer won’t get me back in until the weather warms up which will be in April and I’m looking to take the bike to Daytona in March. This is my dyno sheet and you can see it goes lean in the area I’m having the cold motor issue. I’m also not too confident the tech at the shop was really all that competent. He also had my knock control set to off and when I asked why he told me that 2013 Touring 103 did not use the ability to detect knock. Before I go back in to complain I’d like to have some facts.
 
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Old 12-16-2018, 08:10 PM
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Short answer—Find a tuner that knows what he’s doing.
 
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Old 12-17-2018, 08:22 AM
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Originally Posted by jbarr1
Short answer—Find a tuner that knows what he’s doing.
Thats proving harder than it should be, plus I’m not looking to buy another tuner (ie. TTS, Direct Link, Power Vision) which the 4 tuners I talked to want me to do to get the bike tuned.
 
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Old 12-17-2018, 08:30 AM
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What tuner do you have now? You said you have a data recording from a SEPRT, is that what it’s tuned with? If so, it is quite capable of correcting the issues you’re having when used by a competent tuner.
 

Last edited by jbarr1; 12-17-2018 at 08:32 AM.
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Old 12-17-2018, 09:44 AM
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Originally Posted by jbarr1
What tuner do you have now? You said you have a data recording from a SEPRT, is that what it’s tuned with? If so, it is quite capable of correcting the issues you’re having when used by a competent tuner.
Yes I have the SEPRT. Looking at the tune the warm up enrichment, throttle progressivity and some other settings are untouched from the base map. I would think that those settings should have some type of change with opening up the TB.
 
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Old 12-17-2018, 11:08 AM
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Originally Posted by Pudge211


Yes I have the SEPRT. Looking at the tune the warm up enrichment, throttle progressivity and some other settings are untouched from the base map. I would think that those settings should have some type of change with opening up the TB.
What you are looking at in a dyno graph is nothing more than what the engine is doing and the AFR @ WOT! So it tells nothing about any running conditions other than WOT. There is absolutely no way to extrapiulate proper part throttle settings based on the WOT graph.
Unfortunately the only way to properly tune a bike that has been modified is to either learn how to street tune which can get it close OR find a tuner who understands the system and will identify and correct any and all running issues.
Keep in mind tuners are people just like mechanics and doctors...you have the good, knowledgeable, experienced ones that can fix any run quality issue and those who can’t even identify when and where in the calibration the issue(s) occur.
HTH,
Bob
 
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Old 12-17-2018, 11:48 AM
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Originally Posted by FLTRI17

What you are looking at in a dyno graph is nothing more than what the engine is doing and the AFR @ WOT! So it tells nothing about any running conditions other than WOT. There is absolutely no way to extrapiulate proper part throttle settings based on the WOT graph.
Unfortunately the only way to properly tune a bike that has been modified is to either learn how to street tune which can get it close OR find a tuner who understands the system and will identify and correct any and all running issues.
Keep in mind tuners are people just like mechanics and doctors...you have the good, knowledgeable, experienced ones that can fix any run quality issue and those who can’t even identify when and where in the calibration the issue(s) occur.
HTH,
Bob

Exactly. I have the data log also but that’s not a pic it’s a file. You have a person that will tune a bike with a SEPRT AND that knows how to use the dyno brake to change the settings under 3000rpm??
 

Last edited by Pudge211; 12-17-2018 at 12:06 PM.
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Old 12-19-2018, 08:03 AM
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2013 touring models do use ion sensing knock detection. It works well when turned on.

Where are you located? Maybe someone can make a suggestion.
 
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Old 12-20-2018, 08:37 PM
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Originally Posted by hrdtail78
2013 touring models do use ion sensing knock detection. It works well when turned on.

Where are you located? Maybe someone can make a suggestion.

Northwest PENNSYLVANIA. 1.5 hrs from Pittsburgh, Buffalo and Cleveland
 
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