Power Vision Information Thread
Outstanding HDF Member
Joined: Jan 2007
Posts: 2,598
Likes: 19
From: Naples FL / Pine TWP PA
So you are saying you load your datalog into Power Vision log tuner and there is always a VE adjustment, even after ten runs? How long are you doing your data runs for?
BTW: I'm having the same issue with timing, my VE tables tuned right away.
BTW: I'm having the same issue with timing, my VE tables tuned right away.
6th Gear
Joined: Apr 2011
Posts: 10
Likes: 1
From: Rapid City, SD
The data runs are about 15 to 20 Min about 7-8 Meg of data!
I will do more tomorrow. I Just don't want to lean out the motor to much!
Outstanding HDF Member
Joined: Jan 2007
Posts: 2,598
Likes: 19
From: Naples FL / Pine TWP PA
The VE tables are not leaning or richening the motor. They are just calibrating how the motor breathes, nothing more. In real simple terms it makes sure the map plays like its written. I know I'm dating myself but think of it as a record player, VE calibration is just setting the proper turntable speed for playback. 45s sound kind of funny at 33 or 78 RPM, same idea.
6th Gear
Joined: Apr 2011
Posts: 10
Likes: 1
From: Rapid City, SD
The VE tables are not leaning or richening the motor. They are just calibrating how the motor breathes, nothing more. In real simple terms it makes sure the map plays like its written. I know I'm dating myself but think of it as a record player, VE calibration is just setting the proper turntable speed for playback. 45s sound kind of funny at 33 or 78 RPM, same idea.
The reason I thought it was leaning or richening the motor was because of the PV software. If you look at the note on the bottom of the page of VE front it says that to increase fuel make the values larger and to decrease fuel make the values smaller.
Thanks for the help
Road Warrior
Joined: Aug 2010
Posts: 1,268
Likes: 8
From: Detroit, the asshole of America
In open loop changing the VE tables does change the air/fuel ratio. In closed loop the ECU will learn out most errors in the VE tables for your combination, but the goal is to have the base VE tables right so the O2's don't have to correct at all.
Cruiser
Joined: Mar 2009
Posts: 228
Likes: 0
From: Texas
I believe that if you increase the values in the VE table cells it will richen up this area of the map. Decreasing the VE values leans out that region of the map. I believe this because when Jamie sent me a revised copy of my original FM map he said that he added fuel to a certian portion of the map (closed-loop region) and the only change he made that I can see is increased VE values in the affected portion of the map. All CL bias values remained unchanged at 700 and the AFR values were unchanged too. Maybe someone could explain to us how this works.
Outstanding HDF Member
Joined: Jan 2007
Posts: 2,598
Likes: 19
From: Naples FL / Pine TWP PA
Yeah I can see how it reads that way. Really they worded kind of wrong. The impact is correct but you are taking it out of calibration one way or the other.
Outstanding HDF Member
Joined: Jan 2007
Posts: 2,598
Likes: 19
From: Naples FL / Pine TWP PA
I believe that if you increase the values in the VE table cells it will richen up this area of the map. Decreasing the VE values leans out that region of the map. I believe this because when Jamie sent me a revised copy of my original FM map he said that he added fuel to a certian portion of the map (closed-loop region) and the only change he made that I can see is increased VE values in the affected portion of the map. All CL bias values remained unchanged at 700 and the AFR values were unchanged too. Maybe someone could explain to us how this works.
Last edited by FX4; Jun 3, 2011 at 09:00 AM.
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6th Gear
Joined: Apr 2011
Posts: 10
Likes: 1
From: Rapid City, SD
Maps
Well the map I am working on is the one that Dynojet told me to use for this bike with all the stuff I have on it. Maybe I should have used the stock one and let the software make suggestions to change that one.
I did 2 more runs this morning and the VE tables are changing going up and not down this time. I am using the narrow band sensors and the changes are only about 1 or less at a time. It sure would be nice to see 0 in the delta some time today.
Second Tank of Gas today! 195 Miles yesterday tuning!
I did 2 more runs this morning and the VE tables are changing going up and not down this time. I am using the narrow band sensors and the changes are only about 1 or less at a time. It sure would be nice to see 0 in the delta some time today.
Second Tank of Gas today! 195 Miles yesterday tuning!
Last edited by Scotd; Jun 3, 2011 at 09:19 AM.
Supporter
Joined: Sep 2007
Posts: 288
Likes: 0
From: @Home
Power Vision Log Tuner is now available!
The Power Vision Log Tuner application allows users to fine tune their calibration with or without a dyno. It utilizes the Power Vision unit as a powerful data logging device along with an easy to use software application to create your tune. The PV Log Tuner software uses your logs and PV value files to create corrected VE and Spark tables based on O2 sensor and knock retard events. The Power Vision log tuner software is free and incorporates two powerful tuning platforms:
Power Vision Log Tuner Basic - uses the factory O2 sensors
Power Vision Log Tuner Pro - uses the Dynojet Dual channel Auto Tune module with Bosch Wideband sensors
We will be putting together a video tutorial as well as some additional tips and pointers for using this excellent tuning tool next week. We have been using the Basic and Pro applications extensively and can assist users with any questions that come up along the way.
You can download the Power Vision Log tuner software and user guide from our website at www.fuelmotousa.com/powervision.htm
More to come...
The Power Vision Log Tuner application allows users to fine tune their calibration with or without a dyno. It utilizes the Power Vision unit as a powerful data logging device along with an easy to use software application to create your tune. The PV Log Tuner software uses your logs and PV value files to create corrected VE and Spark tables based on O2 sensor and knock retard events. The Power Vision log tuner software is free and incorporates two powerful tuning platforms:
Power Vision Log Tuner Basic - uses the factory O2 sensors
Power Vision Log Tuner Pro - uses the Dynojet Dual channel Auto Tune module with Bosch Wideband sensors
We will be putting together a video tutorial as well as some additional tips and pointers for using this excellent tuning tool next week. We have been using the Basic and Pro applications extensively and can assist users with any questions that come up along the way.
You can download the Power Vision Log tuner software and user guide from our website at www.fuelmotousa.com/powervision.htm
More to come...
video tutorial
