The BIG Dynojet PowerCommander V and AutoTune Q&A topic

[simmons1]

Thanks for the additional info! I loaded your US AKRA map tonight.

 

[jajpko]

"Can you please explain how the optimizer works and what AFR is supposed to be in the closed loop."

This is from an earlier post:
So a stock a narrow band is very accurate but normally to an AFR of arounnd 14.7:1. This AFR is just too lean for good throttle response and performance. We basically offset the voltage to the ECU and it in returns thinks the bike is lean and will trim the base map accordingly. This by itself works well but only at steady state. Once you move to another RPM or TP setting the ECU has to sense the bike is lean, trim, send fuel and read again which all takes time. This is one of the reasons we recommend to add fuel in the closed loop area. so when you accelerate the bike is already rich and the ECU does not have to learn as much. Technically adding a value of 0-10 should not affect the overall outcome of the AFR at steady state but will affect as you transition within the closed loop area. This is something that needs to be playes with and may be up to rider preference.

One thing to remember is that we are a slave to the stock sensor and programming within the ECU. Some bikes are definitely better than others. For example the Ducati 696/1100. The rear cylinder is very consistent, we can make it stay pretty steady at 13.6-13.8 all day. The front cylinder however will swing from 13.2-13.9. If you connect back to stock you will see the front cylinder go from 14.4-15.4 and we don't know why.

To adjust closed loop has been explained fairly well in earlier posts. What you are adjusting is the voltage of the offset of the Optimizer. A +15 would be 15mv higher than our standard settings. In my testing I have found that a +10-15 normally gets you +.3 of a AFR. So it would go from 13.8 to 13.5. Again, this varies from bike to bike.

"Also did you do a Dyno run on a stock bike, and if you did, what was the AFR chart and how did you obtain it."

NOt sure what you mean. Do you want to know what the stock AFR was or what we changed it to? We obtain the AFR by installing an O2 bung in the stock exhaust and using our Wide Band sensor from the dyno.

"Another question, in the USA maps, how many runs were done to make the map and how did you arrive at 8 for the closed loop? This also is part of the question about the optimizer."

As many as needed. We use a piece of software we designed years ago called Tuning Link which makes altering the PCV to obtain a set AFR very easy. We can normally map a bike within 60 minutes. The value of 8 was explained above.

Thanks.

The AFR chart I'm looking for is on a stock bike with or with out aftermarket can. It is at the bottom of the chart showing HP and Torque. A dotted straight line running from left to right which I believe is 13.6. The bikes AFR will be shown in a solid line or lines.

I really don't understand how you arrived at an AFR of 13.4 as the best power for the bike. Myself and others have run that AFR and it did not preform well at all. Even at 13.2 the map is not a power house. Of course I understand this is on a basic bike with just a can and PCV. I would not think eliminating the CAT would change that much.

Also on the numbers in the Closed Loop, even with 8 in the bike is still de-fueling coming out of the loop. I do understand the time theory, but the fuel numbers are not acting like I would expect. Putting 0 or 8 seems to not make a difference.

Another member changed the slider in the Optimizer adding a plus 4 and 0 in the fuel cells in the Closed Loop. The numbers in the 60% throttle were very high positive numbers, +15, + 18 and others. I don't understand why he was not de-fueling at 60%. He had 13.2 in the open loop

I am not trying to pick on DynoJet, but just looking for answers to questions some of us are seeing in the field.
Thanks

 

[Blue_eyes]

Not that map... lol I was referring to the AFR chart at the bottom of the map. It may have a broken red line at 13.6 with your AFR values by rpm in a solid line.

Just received the map including the AFR line. It is perfectly flat, no weird spikes in the transit area from CL to OL.

 

[simmons1]

I really don't understand how you arrived at an AFR of 13.4 as the best power for the bike. Myself and others have run that AFR and it did not preform well at all. Even at 13.2 the map is not a power house.

Hi Jim:

Just curious, is this seat of the pants, or do you have a dyno run showing that the lower AFR numbers produce more horsepower?

Thanks!

Rich

 

[jajpko]

Hi Jim:

Just curious, is this seat of the pants, or do you have a dyno run showing that the lower AFR numbers produce more horsepower?

Thanks!

Rich

It is seat of the pants, but done by more than one person. The bike just does not pull as hard at 13.4 . Also the bike really drops off in 5th an 6th at 4k and up. If you give it more fuel, it will pull the top end much better.

I just have not had time to take my bike in for a dyno run, but will when I can. That should tell a lot..

 

[DynojetResearch]

Anyone in the Las Vegas area? If so bring it in and we'll make some runs!!

 

[Blue_eyes]

Anyone in the Las Vegas area? If so bring it in and we'll make some runs!!

::008:: ::003::

Wow, Dustin that's great!

That is an offer one can't refuse!

That should answer all questions once and for all! ::021::

 

[jajpko]

Anyone in the Las Vegas area? If so bring it in and we'll make some runs!!

That's a great offer, if I only lived closer.. ::26::
Somebody with headers, can, and PCV with Auto Tune please check in... ::008::

 

[Blue_eyes]

That's a great offer, if I only lived closer.. ::26::
Somebody with headers, can, and PCV with Auto Tune please check in... ::008::

I can almost hear ~TABASCO~ come galloping in! ::012:: ::012:: ::015::

 

[YamaPA]

Just received the map including the AFR line. It is perfectly flat, no weird spikes in the transit area from CL to OL.

Just remember, that AFR at the bottom is likely from a 100% full throttle run....it would be nice if the TQ and HP were from the 60% throttle column....LOL

 

[Blue_eyes]

Just remember, that AFR at the bottom is likely from a 100% full throttle run....it would be nice if the TQ and HP were from the 60% throttle column....LOL

Dynojet has just offered that to you. So it is for you to say from now on. ::017::

 

[YamaPA]

Dynojet has just offered that to you. So it is for you to say from now on. ::017::

I dont understand your comment. Please elaborate.

 

[Blue_eyes]

I dont understand your comment. Please elaborate.

http://www.yamahasupertenere.com/index.php?topic=2813.msg58342#msg58342

So get your bike over there and have them do what you want to see them do. It's now all up to you. ::002::

 

[jajpko]

http://www.yamahasupertenere.com/index.php?topic=2813.msg58342#msg58342

So get your bike over there and have them do what you want to see them do. It's now all up to you. ::002::

That would be a bit of a ride from Pa to Las Vegas Nv and back.. ::025::

 

[Blue_eyes]

That would be a bit of a ride from Pa to Las Vegas Nv and back.. ::025::

You would not be the first... ::26:: ::001::

 

[YamaPA]

I'd be able to go, but crossing the Contintential Divide this time of year can put a real big detour into your trip if its not perfect.

 

[HoebSTer]

Augie dogie has said he would do it. Can someone send him the contact info for DynoJet so he can make an appointment? His bike is stock with only a few hundred miles on it. We night want to let him know what we are looking for since AugieDogie is new.
Thanks

 

[jajpko]

Augie dogie has said he would do it. Can someone send him the contact info for DynoJet so he can make an appointment? His bike is stock with only a few hundred miles on it. We night want to let him know what we are looking for since AugieDogie is new.
Thanks

That's good, but would like to have seen a bike that was heavy in mods. He should at least have a can eh...

 

[Blue_eyes]

That's good, but would like to have seen a bike that was heavy in mods. He should at least have a can eh...

::026::

 

[jozmoto]

That's good, but would like to have seen a bike that was heavy in mods. He should at least have a can eh...

All the Dynojet maps are w/o headers. Most everyone with a PCV has the header mod. IMO the header forces the use of a PCV to get the bike to run well while a can only does not. The bike will run fine with a can only. I know this as I tried headers only, cans (3 different ones) only and both header and can. We may have to wait a while for someone with a full setup to get to Dynojet.