power vision owners tune too much?
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Cruiser
Joined: Mar 2013
Posts: 120
Likes: 0
From: Utah
power vision owners tune too much?
Thanks to you guys I learned that you don't need a seperate auto tune module to be able to auto tune with a regular power vision, that was confusing at first. So I decided to take a fairly cold ride and do some auto tuning. I rode for almost three hours on the freeway, back roads and canyons. I stopped twice to save, load and then re-autotune my last save. I then did a final save and load over the previous two when I got home.
So my question is, did I auto tune correctly or did I save and retune too much? I can't seem to find much auto tune details but the basics of how to start it, save and flash a new tune.
Can you tuneabate too much?
So my question is, did I auto tune correctly or did I save and retune too much? I can't seem to find much auto tune details but the basics of how to start it, save and flash a new tune.
Can you tuneabate too much?
Road Warrior
Joined: Dec 2012
Posts: 1,335
Likes: 5
From: CT
Sounds right to me. You can't really tune too much but you will reach a point where it doesn't make many meaningful changes. Autotune can only do so much... It does pretty good for a built in tuner.
Sent from my Galaxy Nexus
Sent from my Galaxy Nexus
Too much?
I don't know.
I like to do a tune run, then load it, then bring it home and plug it in to see where it made changes. I have saved all my tunes on my computer, so I can look at all of the changes.
After a tune run, I usually go a couple of weeks then do it again. I need to keep better notes as to temperature, barometric pressure etc. Then compare from hot weather to cold, and eventually maybe have a "best tune for the conditions" that is easy to load...
I don't know.
I like to do a tune run, then load it, then bring it home and plug it in to see where it made changes. I have saved all my tunes on my computer, so I can look at all of the changes.
After a tune run, I usually go a couple of weeks then do it again. I need to keep better notes as to temperature, barometric pressure etc. Then compare from hot weather to cold, and eventually maybe have a "best tune for the conditions" that is easy to load...
Outstanding HDF Member
Joined: Feb 2007
Posts: 2,710
Likes: 6
From: Spokane, WA.
I have a PV, and i dunno, i did some tune runs after I got a map from dyno jet, cause i put MGS true duals on coming from power duals.
Did some tune runs and watched all the field areas turn green, did not understand that much of the text that flashed on the screen in the process. I really did not notice much if any change after flashing the tune run(s) from the map I got to start with.
I opted to spend some cash for a dyno tune. I guess the Wide band tune upgrade would have been the way to go?
Not knocking the PV though. I understand that the narrow band sensors are limited in the range that they will tune regarding the AFR.
Did some tune runs and watched all the field areas turn green, did not understand that much of the text that flashed on the screen in the process. I really did not notice much if any change after flashing the tune run(s) from the map I got to start with.
I opted to spend some cash for a dyno tune. I guess the Wide band tune upgrade would have been the way to go?
Not knocking the PV though. I understand that the narrow band sensors are limited in the range that they will tune regarding the AFR.
Road Warrior
Joined: Jul 2009
Posts: 1,579
Likes: 144
From: SC
tune
I agree, my experiences are about a +/-0.2 or so change up or down over 4 or 5 autotunes... about as good as it can get in my opinion
Road Warrior
Joined: Jan 2010
Posts: 1,290
Likes: 20
From: Salem, Or
I just installed the wide band auto tune unit so I'm starting over again. After two tuning runs the bike is running even better than before. I am still getting 12% max changes to the VE tables and I still haven't hit any of the upper RPM areas.
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Seasoned HDF Member
Joined: Sep 2008
Posts: 14,160
Likes: 11,249
From: San Diego, CA
I took a class at DynoJet on tuning with the PowerVision.
They suggested to try and hit as many cells on an auto tune run as you can. This can be seen on the PV.
They said that once your auto tune suggests changes that are within 4% of the last tune, you are done. You would be just chasing your tail if you tried to get closer than 4%.
How many auto tunes that takes, will be based on how close the tune was that you are starting with...
Just a few things from my class notes.....
They suggested to try and hit as many cells on an auto tune run as you can. This can be seen on the PV.
They said that once your auto tune suggests changes that are within 4% of the last tune, you are done. You would be just chasing your tail if you tried to get closer than 4%.
How many auto tunes that takes, will be based on how close the tune was that you are starting with...
Just a few things from my class notes.....
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Road Warrior
Joined: Jan 2008
Posts: 1,549
Likes: 18
From: Upstate SC
I have found that I can tune using 4 or 5 runs and get real close (only have slight VE changes) After 8 or 9, 30 minute runs can have most all areas covered well. After than just tweak settings as needed and then use PV for different gauges or to retune when something changes.
Thread Starter
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Cruiser
Joined: Mar 2013
Posts: 120
Likes: 0
From: Utah
I just plugged it in and tossed it in my saddle bag, then flashed the new tune so I don't know what these percentages are you guys are talking about. But it sounds like I might benefit from doing a couple more runs. Maybe I'll get a bar mount one of these days.