I had a buddy with an earlier version power commander go haywire, the issue was; one of the buttons getting actuated while running by the way it was nestled in by a zip-tie.

 

Wow. With all of the PCV problems I have seen here it makes me wonder if there are a lot of problems with the Power Vision as well. I have been thinking about buying one. Right now, my HD stage 1 download has my bike running pretty well.

 

If you haven't already make sure you have the latest software and firmware installed from the Dynajet website. You may even uninstall the original and reinstall from website. Also I would change the usb cable as I have had one of those bad. It is standard usb.
If you are doing the update with it on the bike, I would do it with the bike switches off. It may not matter, but can see how you can get interference. Make sure you O2 sensor wires aren't running next to a plug wire as this can cause ignorant stuff to happen. I would also go into the autotune and change the maximum it can change rich or lean to 5% to start with. I know this doesn't have anything to do with your problem, but it has caused difficulty for me in the past. When you accept trims make sure there are no big numbers showing. Once you get everything worked out you can open up the trim min max to 10 or so. I really don't like the 20% default particularly with cams.
I have included a map we have had good results with. It is working on several touring bikes. Of course it will have to be unzipped before you can use it.

 

I have been dealing with the PCV for several years and the only problems I have seen with them is dealers unhooking them and blaming every problem on them. Also have seen some problems with water getting in the connector if you don't grease it with dielectric grease. You can wrap the joint and seal it also. Make sure all the plugs are in place on the PCV also to keep water out.
Have also run and tuned many Power Visions and never a problem with them. Just make sure the everything is up to date with the Update client. You have to do this with the SEPST also. When PV first came out lots of dyno tuners didn't know how to use them and made a mess. If you can use the SEPST you can use the PV. All tables for the same Strategy like 9 for late touring can be copied and pasted from one to the other.
If you are happy with your Stage 1 download stay with it. All it changes is adds some fuel 5 to 9% up high in the 90 to 100% kpa from 2000 to 6000 rpms and adds 2 to 4 degrees timing in some places down low. It also adds 10° in the 15% kpa from 3000 to 8000 rpms. Doubt that one will make any difference may help with decel pop.

 

Thanks for your input. I couldn't open the map but that's ok... my map is pretty well dialed-in as I have been doing minor tweaks to it for a while now.

As for "accepting" trims, that is something I will only do in the very beginning of my tuning process - maybe once or twice. After that I won't make any changes to the map until I have several sets of data to look at. I currently collect at least 8 sets of data before making any changes, and the changes I do make are done manually and are based on the averages of my collected data.

I've seen many times where the trim values will swing from plus to minus a few percentage points from one run to the next... That is why I never arbitrarily accept trims. If you get a +2 one run, and then a -2 on another run, you don't want to "accept" either. Doing so will throw you off farther than leaving that cell alone. Another thing I've seen is a random trim value way outside of the family... maybe a single random 6 or 7 percent when the majority of the data for that cell is 1 or 2 percent. You surely would not want to accept that 6 or 7 percent in this case. That is why I work from averages over several runs now.

I wouldn't let the problems you hear about on this or other forums sway you one way or the other. My problem, and I'm not sure I even consider it a significant problem, may have nothing to do with the PCV. It maybe computer related. Either way, now that I'm aware of the issue it's something I can easily manage as I said earlier.

Remember, for every problem you read about here, there are hundreds or thousands of others that do not have any issues.

 

I have seen other posts where you have mentioned this, and I'm curious as to what type of problems you've had by leaving the trim limits at 20%. I just recently started using auto tune and I left the limits in their default settings. I figured whatever trims it created, I would accept them and over time the values would get smaller and smaller as the tune got closer to being dialed in. My first trim tables had quite a few 20s particularly in the 2% tp column below about 2500 or so rpm if I remember right. I thought it seemed a bit odd, but I accepted the trims anyway. All of them. I am considering reloading the original map and starting over with lower trim limits as you suggest, but I'm curious as to what exactly the thought process is. Also curious why you mention especially with cams? Even if I do lower the limits, I will probably still accept all the trims, because the way I see it, if I'm going to second guess the technology, then why did I buy it. I am an autotune newb, and appreciate any enlightenment you can drop on me. Now back to your regularly scheduled programming.

 

My guess if it's only happening while connected to the computer you got a bad USB cable or port. Definitely get a different USB cable, and try using a different USB port on your computer.

 

The 2% TP is hard to get dialed-in. You'll never get it as close as the rest of the map. Typically I don't see many trims in excess of +/- 2 or 3 percent for the majority of my map, but I will see larger and much more random trims (+/- 5,6 & 7 percent) in the 2% column. I believe this has a lot to do with riding style. Acceleration and deceleration momentary transients play a big role at 2% TP and that is why I believe you see bigger and more random swings there.

For a long time I had the AFR targets zeroed out in the 2% column, effectively disabling the autotune there. I've recently reloaded targets to try to dial it in a little better but I will eventually disable the autotune in that range once I'm satisfied I have it a close as I can get it.

In fact, I may disable the autotune altogether at that point because the rest of my map is as close to spot-on as it's ever going to get.

 

I should clarify from my earlier post that the 20s I mentioned were actually -20. Not that that really changes my question, I just wanted to get the details straight.

 

what are the differences in the strategies? i have a map that uses strategy 44, and i have a late touring model. just wondering if i should use a different map.