• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

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Need opinion on JD tuner

emag1360

Husqvarna
A Class
2011 630 SMS 14T CS
front 2.2K resistor installed
opened air box plus removal of the snorkel and the maze
Decat stock pipes, iridium spark plug.
Would a JD tuner be the icing on the cake?
 
I've a 610 with a JD Tuner and I would say its definitely worth the $200

I'm still playing with the settings on my bike but it certainly gives it some more grunt and seems to give a bit more at the top end.
 
With your mods bike is prob quite lean (unless it's been on Ibeat). May find 5-7hp with tuner.


.
 
What settings are you using? I have the normal upgrates; P/U, 14 thooth cs, FMF Q4 and put mine on right out of the box. I enjoy the performance increase but not the fuel mileage and 100 mile per tank range...

My bike has the same mods as yours. The JD is what ties it all together. Without the JD the bike was not much fun to ride - too lean and not smooth. With the JD it is a blast. Cam
 
And twice on Sunday! But seriously.... settings?
Do you have a 610 or 630? 1lunger has his 610 dialed in quite well and has shared his settings. I posted my 630's JD tuner settings on a different thread some time ago. Remember, each bike runs a little different so tuning takes some trial and error. Starting with JD's initial settings and adding fuel in each range until there is no longer gains will give you the best results IMO.
 
Do you have a 610 or 630? 1lunger has his 610 dialed in quite well and has shared his settings. I posted my 630's JD tuner settings on a different thread some time ago. Remember, each bike runs a little different so tuning takes some trial and error. Starting with JD's initial settings and adding fuel in each range until there is no longer gains will give you the best results IMO.

I've got a 630. I'm happy with the out of the box performance I just need more fuel range. I'll seek out your settings and compare. Thanks.
 
I've got a 630. I'm happy with the out of the box performance I just need more fuel range. I'll seek out your settings and compare. Thanks.

You won't get better mileage than the obnoxiously lean settings of the stock, non-PU'd bike.
 
For all the replies, I have a 2011 630 with all the mods mentioned above. No JD Tuner yet, but will be getting one soon and then I'll send you my tuner settings. Got all my stainless steel for my pipes yesterday and I'll have it on the road this weekend.
 
You won't get better mileage than the obnoxiously lean settings of the stock, non-PU'd bike.


Yes, that is obvious however 100 miles per tank is disappointing to me. The bike has all the normal performance mods and runs great so playing with the tuner settings is probably in order. Other contributing factors; only 1k miles on the bike (may improve after fully broken in), I weigh 250, ride aggressively and usually in the mountains. I am otherwise very satisfied with the bike (3rd Husky).
 
100 miles per tank... I weigh 250, ride aggressively and usually in the mountains.

Found your issue :p If you want to keep the smooth power and low end grunt, you'll just have to live with the 100-120 miles per tank. What gearing do you have?
I get about 120 with normal commuting and screwing around before I need to find a gas station, which equates to ~40mpg the last few times I've measured it. That puts me filling up about once a week for $10-12. Maybe down to 35-38 mpg if you throw some mountains in there. If you want longer range, you need to find another bike or pick up a Safari tank for a few extra gallons.
 
Can someone educate me a little bit on the JD Tuners? I'm interested in getting one, but I'm curious how JD offers a single part number for the TE450/510/610-630 (08-12) that will work for all these applications. Maybe I'm not understanding how the thing works yet, but I would think its default settings would be different depending on the bike. All these bikes don't run the same ECU and maps I wouldn't think, so how could one part work for all of them?

FYI my bike has a Leo x3 system with the resistor plug in/O2 sensor removed. I'm in the rich map and now getting about 40mpg (down from 55 stock). I was told the O2 sensor has to be removed and the bike on the "race map" for the tuner.
 
Can someone educate me a little bit on the JD Tuners? I'm interested in getting one, but I'm curious how JD offers a single part number for the TE450/510/610-630 (08-12) that will work for all these applications. Maybe I'm not understanding how the thing works yet, but I would think its default settings would be different depending on the bike. All these bikes don't run the same ECU and maps I wouldn't think, so how could one part work for all of them?

FYI my bike has a Leo x3 system with the resistor plug in/O2 sensor removed. I'm in the rich map and now getting about 40mpg (down from 55 stock). I was told the O2 sensor has to be removed and the bike on the "race map" for the tuner.

All the JD does is plug in between the ECU and the injector, it doesn't interface directly with the ECU.
The stock settings of 3 across the board doesn't really do anything. By increasing or decreasing that number, you increase or decrease the pulse width of the injector, changing the amount of fuel per cycle in low/med/high RPM ranges.
That is the first three settings of Green, Yellow and Red. Each half-step equals a 3% adjustment.
The next two settings (Green/Blue and Yellow/Blue) affect what RPM the midrange and high settings come into effect. Bringing the G/B down to 2 seems to have the biggest effect on smoothing out the low-rpm surge/bog that some have experienced.
The last setting, Red/Blue, adjusts the acceleration enrichment, which affects throttle response.
 
All the JD does is plug in between the ECU and the injector, it doesn't interface directly with the ECU.
The stock settings of 3 across the board doesn't really do anything. By increasing or decreasing that number, you increase or decrease the pulse width of the injector, changing the amount of fuel per cycle in low/med/high RPM ranges.
That is the first three settings of Green, Yellow and Red. Each half-step equals a 3% adjustment.
The next two settings (Green/Blue and Yellow/Blue) affect what RPM the midrange and high settings come into effect. Bringing the G/B down to 2 seems to have the biggest effect on smoothing out the low-rpm surge/bog that some have experienced.
The last setting, Red/Blue, adjusts the acceleration enrichment, which affects throttle response.

Thanks for the reply. I get how it is after the ECU and just modifies the output or not, and the ECU has no idea it is there. You've cleared up the rest of the settings I didn't fully grasp yet with a great explanation. What I still don't get is how the stock #3 settings will work for the 610-630, 510, and 450 since it's the same part for all the bikes? Unless they all run the same ignition curves I'd assume the stock settings would be different for some of these bikes.
 
Stock curves don't matter, all it means is that at setting 3, the JD is just passing along whatever is coming through from the ECU. It just modifies that pulse width by 3% with every setting, regardless of what the ECU pulse width is.
 
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