iclick

Try this, goto

http://www.ncs-stl.com/PVTune/?C=M;O=D

Right click on PowerVision.Settings and pick save link as and save it somewhere you can find it. The MegaLogViewer HD root directory is great.

Now open MLV HD and go to

File
Settings
Import Settings and grab the PowerVision.settings that you saved off somewhere.
Just enter thru the warnings

Now on the log viewer tab, plot in the top section
RpmPV
MapPV
TpPV

In the next section plot
SetRPM
WideBandRpmFr
WideBandRpmRr

You will see just how well the AFRs are staying on the target AFR

Now on the scatter graph tab on the left graph, plot
x=MapPV
y=RpmPV
z=Set AFR

In the right pane, plot
x=MapPV
y=RpmPV
z=WideBandAfrFr or z=WideBandAfrRr

These two Plots in theory should look identical. In practice, they can be very close.

Here is an example of a fairly well tuned bike.

http://www.ncs-stl.com/PVTune/PVWideBandTune.JPG

Here is what the same tune looks like in graph form. You can see the widebands (red and white) compared to the target AFRs in green.

http://www.ncs-stl.com/PVTune/WideBandTrace.jpg

To answer your original question, yes some spikes are unavoidable. Part of the problem is that wide band o2 are not real crazy about dealing wit sudden changes on temperature of the exhaust and take a bit of time to catch up. I is just something we have to deal with. We are looking for patterns in the colors. Any section that is consistently giving the wrong answer comes down to the VEs need leaning on.

Have fun tuning

Beast

 

Quick question: I thought I remember DJ coming out with a quick release for the PV that works w/ the Tech mount. Any progress on this. I really hate those little screws! Thanks.

TedMan

 

I use one of these. Bolts right up.

http://www.amazon.com/gp/product/B003FMUP14

 

Here's how I made my PV easily removable, easily adjusted (even when riding) with a bracket that looks very nice even when the PV is detached..

I started with Kuryakyn's universal chrome handlebar clamp (get the size that fits your handllebar) http://www.kuryakyn.com/Products/375...y-Mount-Clamps

Attach a Ram 1" ball (RAM-B-337U $8.95) to the Kuryakyn mount. http://www.gpscity.com/ram-mount-fem...am-b-337u.html
using a 0.25-20 thread stainless steel socket head or phillips head screw from your local hardware (I forget the exact length but I believe it's either 1" or 1.25").

Attach this Ram mount plate (RAM-B-347U $5.72) to the back of your PV. http://www.gpscity.com/ram-mount-rec...am-b-347u.html
If you're particular, you can replace the plated back plate screws with stainless steel screws.

Now attach the ball on the back of your PV to the ball on your handlebar with this Ram clamp (RAP-B-201U-A $7.50) http://www.gpscity.com/ram-mount-pla...-b-201u-a.html

You'll now have a mounting system on your handlebar that will allow the PV to be easily removed for either security or other reasons with an attractive handlebar mount still on the bike. You'll also save some $ over other alternatives. You'll still need to plug/unplug the PV but you'll need to also plug/unplug the PV with the quick detach planned for the Techmount.

 

This is stock NB o2 sensors. This was made after I am guessing but it was not more than 4-5 runs I know because I have had no time. I have plotted one other run but its a work in progress and I have only one run on it and its a lot wider band than this. Now I question how much better is the narrow band sensors going to do? Its not going to get as good as JD did on the wide bands? What is expectation of the narrow bands? If I start to like and use this megalog how do you purchase it?

 

Regarding purchasing it, I would just wait till it times out in October. I don't think he has the liciensing worked out quite yet.

Is your bike a Throttle based VE or a MAP based VE table?

If you are Throttle based VEs then plot

x = TP or TpPV if you imported my settings file
y = RPM
z = Front Rear AFF if adaptive fueling is turned on
or z = Front CLI if adaptive fueling is turned off

If you have MAP based VE tables then plot

x = MAP or MapPV if you imported my settings file
y = RPM
z = Front Rear AFF if adaptive fueling is turned on
or z = Front CLI if adaptive fueling is turned off

Just keep sneaking up on it with about 3% changes to VEs on every test.

Beast

 

Bike is a 2010 street glide. Map based VE I dont understand "z" or I did not log it? Not sure what AFF is. On that run above I had adaptive fuel on. I have another run with it off but its only one run.

 

On the screen you have to choose things to log. Two of the many options is Front Adaptive Fuel Factor and Rear Adaptive Fuel Fuel Factor.

In the logs, they show up as Front AFF and Rear AFF.

These two things are golden. They are the percentage that your ECU is holding for the correction at each RPM and MAP point in the map. When these are 100 everywhere, you have the perfect tune. In the real world, they will stay within about 102-98 or so.

102 implies that the ECU will multiply the VE by 1.02 as its best guess. If hand tuning and graphing with MegaLogViewer HD, you will see in the plot, the patterns that develop after riding the bike a few times. Note that this only works in the closed loop sections of the map.

Keep in mind that they take about 10 min to start reading anything other than 100 after a fresh reload. It takes about 20 more min of riding for them to home in and stop moving a lot. These corrections are held in the ECU for then next ride so on the following rides, they start close to what this tune on your motor needs. They are also what the auto tunes or you with hand tuning need to create the next best guess.

Have fun tweaking

Beast

 

Bonjour Dennis, can you help me about PV tuning instructions:

How do I check if my 2008 RoadKing is 20x level calibration ?
May I rely safely on logs where both AFR and Lambda were filed ?
Does LT autodetect the right value needed ?
I did'nt dare downloading and running the new tune I've got, since changes in Front spark advance spread from 2 to 5.24 in the 2000-3000 rpm range... I stay with stock narrow band.

Thanks in advance,

 

Bonjour. To check the level of your 08 RoadKing, open the Map you are using in WinPV, under the Tune Info dropdown, select description, you should see several things but one of the would say Strategy 20X. You can use the PV to copy the current map from the ECM, then use WinPV to get the tune from PV and save to your PC.

Yes you can log both AFR and Lambda without issues. Only one of the AFR or Lambda values will be populated. Once you run one log and look at it, you can remove the other signals.

Your bike should use AFR values like mine does.