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I have the Cobra Speedster Shorts and a DynoJet Power Commander III already installed on my bike. Now I'm pretty much lost, but learning how this all comes together.

First, I understand that the EXUP valve has been removed for the new pipes. Then the O2 sensor unplugged for the power commander III. After that, I don't know how the power commander is programmed, tuned, or what ever? It has three push button pads on it, and plug ins for usb and ? I can only assume that it has already been tuned by a dyno machine? So, then how often does this need to be done? Or can anyone tell me how this unit operates so I know if I'm have a tuning problem? Rich/lean, reprogram? I just don't know how it works? Help please. I can't get any info. online about it, except that it increases HP, improves performance.
 

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Discussion Starter #3
Dave,
Thanks. That's The Site I'm Talking About. They List The Cobra Speedster Longs, But Not The Shorts?
 

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Thanks For The Tech Number Dave, I'll Give Them A Call In The Morning. I Appreciate It.
 

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you might want to use cuation. if somebody did get it dyno tuned it will have a far superior map that the stuff you can download as it will be tailord to the bike. the download maps are great but dyno is best. good luck.
 

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DITTO......

None of the maps are exact for every application. Dyno Jet does not have a map for the Cobra Speedster short. There is one there for the longs and extra longs... I'd guess the longs would be close.

Save the map that is in the power commander right now to some name (speedsterShort would be good) so you can put it back if you don't like how the map for the speedster long acts.

I talked with Dyno Jet's tech about mine and they advised me to try the cobra maps for the DG Hardkrome Big Straights. I ended up actually having it dyno tuned by a authorized Dyno Jet tuner. Gained over 10 hp and a bunch of torque.

That power commander will do very good things but you have to teach it what and when to do exactly what you want...
 

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Discussion Starter #8
you might want to use cuation. if somebody did get it dyno tuned it will have a far superior map that the stuff you can download as it will be tailord to the bike. the download maps are great but dyno is best. good luck.
Thanks, and I can understand that. I'm just trying to understand how the power commander works, and what it does for my bike? What the three buttons on it are for, and how it tunes the bike to the exhaust, fuel/air mixture, etc... And I don't know how the whole map thing works anyways. I would probably just have it dyno tuned if it needed it, by the professionals.
 

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Discussion Starter #9
DITTO......

None of the maps are exact for every application. Dyno Jet does not have a map for the Cobra Speedster short. There is one there for the longs and extra longs... I'd guess the longs would be close.

Save the map that is in the power commander right now to some name (speedsterShort would be good) so you can put it back if you don't like how the map for the speedster long acts.

I talked with Dyno Jet's tech about mine and they advised me to try the cobra maps for the DG Hardkrome Big Straights. I ended up actually having it dyno tuned by a authorized Dyno Jet tuner. Gained over 10 hp and a bunch of torque.

That power commander will do very good things but you have to teach it what and when to do exactly what you want...


Ok, so the program the power commander is running now, was probably done by a dyno machine? So it has to be programmed via usb cables by someone who actually knows what they're doing in order for it to be tuned in properly? Okay, I think I'm getting it now. So when it replaces the oem o2 plug in, it was programmed to do it's job right? I'm not up on all this high tech stuff. Still learning. Thanks for everyone's responses.
 

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power commander

Ok, so the program the power commander is running now, was probably done by a dyno machine? So it has to be programmed via usb cables by someone who actually knows what they're doing in order for it to be tuned in properly? Okay, I think I'm getting it now. So when it replaces the oem o2 plug in, it was programmed to do it's job right? I'm not up on all this high tech stuff. Still learning. Thanks for everyone's responses.
yes. the guys running the dyno have a PC and an O2 sensor and can monitor the air fuel mixture as the bike is running under different loads, trottle position, rpm everything. they can tell by the dyno when you make more power at what air/fuel ratio. here is a link that has a decent explaination.
http://www.youtube.com/watch?v=kZaCKyoMQVM

this one shows the map on a PC and how is it done. this is a great vid.
http://www.youtube.com/watch?v=y7d6FQ8hiDM

hope this helps and good luck.
 

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Discussion Starter #11
yes. the guys running the dyno have a PC and an O2 sensor and can monitor the air fuel mixture as the bike is running under different loads, trottle position, rpm everything. they can tell by the dyno when you make more power at what air/fuel ratio. here is a link that has a decent explaination.
http://www.youtube.com/watch?v=kZaCKyoMQVM

this one shows the map on a PC and how is it done. this is a great vid.
http://www.youtube.com/watch?v=y7d6FQ8hiDM

hope this helps and good luck.
WOW! Now I get it! Thanks. You are the Brain! That makes understanding everything easier. I didnt get the CD, usb cord, or 9 volt power supply with the bike, but I'm sure I can get one on ebay, or order it from the Power Comm site.

I think I'm gonna get it dynoed in the spring, so I can have my own map.
 

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I did not get any of that stuff either when I bought my '06 used... Called Dyno Jet and talked to the tech there. He coached me on down loading all the info I needed and even sent me the 9 volt adapter for free.... The USB cable you might have to buy. I was lucky enough to have one that fit from an old digital camera.
 

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Check your map, it might be custom already

WOW! Now I get it! Thanks. You are the Brain! That makes understanding everything easier. I didnt get the CD, usb cord, or 9 volt power supply with the bike, but I'm sure I can get one on ebay, or order it from the Power Comm site.

I think I'm gonna get it dynoed in the spring, so I can have my own map.
you should try to be there when it happens its cool. it may already have the tuning done. i would think they would be able to tell right away that you have a custom map. or you may be able to tell on your own if you can get it hooked up to a computer. then you can go to the dyno find your HP/TQ and save on the tuning cuz its already been done.
 

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Discussion Starter #14 (Edited)
you should try to be there when it happens its cool. it may already have the tuning done. i would think they would be able to tell right away that you have a custom map. or you may be able to tell on your own if you can get it hooked up to a computer. then you can go to the dyno find your HP/TQ and save on the tuning cuz its already been done.
Thanks again brain! Tell all the Rednecks, we said hi, ok? lol! You probably get that alot huh?
Just ribbing ya for fun. Thanks for all the info.

I'll have to wait till my garage door gets replaced Monday. I have the bike in the dining room right now. I pretty sure the wife won't let me hook up the usb cable, and fire the bike in the house. I know, right? Women! I don't know why they can't be like race cars? Fix em up, ride em hard, trade em off for a new one! Boy! I'm glad my wife don't get on here! lol
 

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Thanks again brain! Tell all the Rednecks, we said hi, ok? lol! You probably get that alot huh?
Just ribbing ya for fun. Thanks for all the info.

I'll have to wait till my garage door gets replaced Monday. I have the bike in the dining room right now. I pretty sure the wife won't let me hook up the usb cable, and fire the bike in the house. I know, right? Women! I don't know why they can't be like race cars? Fix em up, ride em hard, trade em off for a new one! Boy! I'm glad my wife don't get on here! lol
Lol, hey to you Dinger. Ol Sugar Bear, as well as most riders on here,I think can identify with your comments, been there. Hang tough and enjoy!;)
 

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just put a roadhouse on tonight and fired it up. 20 deg F and it didnt complain at all. sounds righteous under thottle yet seem very reasonable at steady throttle 2000 - 3000 rpm. i gained 5 hp just from the sound effect. lol
 

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Discussion Starter #17
Talked to Power Commander Tech via emails. He told me that I can plug in my usb cable to the PCIII, and my computer. He says the custom map will automatically pop up for me. Thanks to all for the education!
 

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Yamaha Speedstar Pipes and Power Commander II

My 2006 Stratoliner S came with the Speedstar pipes and Power Commander II already installed. I never really had any complaints because the power from the Stratoliner was so much more than my Roadstar.

A roaming dyno truck showed up at the local Mountainfest and come to find out they were experts in custom mapping Power Commanders. When they were done with my bike the difference was very noticeable. I don't think I gain more top-end power but the power band was significantly smoother -- found I had to downshift much less going up inclines in the road.

They had a hard time getting started because they were under the impression the 02 sensor was removed when the Power Commander was installed (recommended by installation instruction) -- it wasn't. Once they removed the sensor, everything went smoothly. On the dyno he had the engine run-up to 5200rpm in 5th gear -- don't know what the speedo said.

Numbers: 86.9HP and 116lbs of torgue at rear wheel. (These are not significant numbers but are higher than stock)

The downside is fuel millage is not that great. At my typical highway speeds (70-75) I probably average about 36mpg.

By-the-way, that was an expensive weekend. The custom map cost me $300.00 and the oil change/flush cost me another $200.00 - had them change out my standard Yamalude for AmSoil Synthetic (20W50).
 

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Discussion Starter #19
My 2006 Stratoliner S came with the Speedstar pipes and Power Commander II already installed. I never really had any complaints because the power from the Stratoliner was so much more than my Roadstar.

A roaming dyno truck showed up at the local Mountainfest and come to find out they were experts in custom mapping Power Commanders. When they were done with my bike the difference was very noticeable. I don't think I gain more top-end power but the power band was significantly smoother -- found I had to downshift much less going up inclines in the road.

They had a hard time getting started because they were under the impression the 02 sensor was removed when the Power Commander was installed (recommended by installation instruction) -- it wasn't. Once they removed the sensor, everything went smoothly. On the dyno he had the engine run-up to 5200rpm in 5th gear -- don't know what the speedo said.

Numbers: 86.9HP and 116lbs of torgue at rear wheel. (These are not significant numbers but are higher than stock)

The downside is fuel millage is not that great. At my typical highway speeds (70-75) I probably average about 36mpg.

By-the-way, that was an expensive weekend. The custom map cost me $300.00 and the oil change/flush cost me another $200.00 - had them change out my standard Yamalude for AmSoil Synthetic.
What weight Amsoil? 20-50 weight? 20-40 is an unusual blend. Advance Auto Parts stores don't carry it anyways.

Did they upload your custom map to your laptop, via a usb cable? Just wondering why it cost so much? I think a local dyno is between $70-100. It must not include mapping?
 

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$300 for a Power Commander dyno tune is about the going price. I paid just a bit less but since I had to go 250 miles to get it I guess they took pity on my wallet.... I ended up with about the same numbers Hilleyja did.. Sure made a difference in the lugging power.

Now about Amsoil.... They recommend 20W50 for air cooled engines and 10W40 for water cooled. I've run 20W50 in my GL1800 Goldwing during the hot summer months but not in a few years now. Amsoil makes good products. IMHO -- worth the $$$
 
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