Power Vision Auto Tune, Keep tuning the same map?
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Cruiser
Joined: Jun 2012
Posts: 124
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From: Washington
Power Vision Auto Tune, Keep tuning the same map?
So when you do a Auto Tune, do you start with the same map you just tuned to dial it in better? Or do you start with the same base map each time?
Cruiser
Joined: Oct 2012
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From: Mesa AZ
Come on all you PV owners
Outstanding HDF Member
Joined: Jan 2011
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From: Western Illinois, land of bad roads, and corrupt politicians
Load a map.... do an autotune and save it. Load that autotune, and run an autotune on that autotune. Save that autotune, and load it... run an autotune. In other words, you are tuning an autotune map, then tuning the results. Just keep loading the newest autotune map.
You can load it later into the WinPV software to tweek it, or name it something cooler than what the autotune names it, then push it back into the PV.
For example I have a file called crapgas.pvt in case I run into really low octane gas. That's when I realized how nice the PV is to have. Took about 45 minutes to get 87 octane to run good. And I also used WinPV to pull some spark out above 3000 rpm to tame the pinging. But at least I now have a map for the next time I run into 87 octane corn squeezin gas, and have no choice.
Clear as mud?
You can load it later into the WinPV software to tweek it, or name it something cooler than what the autotune names it, then push it back into the PV.
For example I have a file called crapgas.pvt in case I run into really low octane gas. That's when I realized how nice the PV is to have. Took about 45 minutes to get 87 octane to run good. And I also used WinPV to pull some spark out above 3000 rpm to tame the pinging. But at least I now have a map for the next time I run into 87 octane corn squeezin gas, and have no choice.
Clear as mud?
Last edited by shooter5074; Jun 11, 2013 at 03:55 PM.
Road Warrior
Joined: Apr 2010
Posts: 1,648
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From: Monroe, Louisiana
I like to save a copy of the original and each time I save an autotune I pull a copy and go to WinPV and do a compare with the new map as the first opened and the original as the compare file. Mine tended to lean the low end a little too much for my liking and make it lazy and less responsive. I just highlited the area I want to copy and paste it into the new autotune map. After that I highlite the entire VE table and click the smooth button. Makes a big difference in how smooth it runs. I don't use the smooth but once. If you keep clicking it it will keep making all the mixtures get closer to each other. I also smooth the timing tables. A little extra info the timing tables make a lot of difference. I still can't believe you can run as much timing as you can down low. I am running 24 degrees off idle and up to 30% load and 750 to 1750 rpms. Never had a ping and has much better torque there. Mine only had about 16 degrees in this area.
Last edited by ke5rbd; Jun 11, 2013 at 11:33 PM.
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Road Captain
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From: Baton Rouge, LA
Correct. If you start with the original tune you'll just be starting over again. The latest tune should be your closest starting point for any adjustments. That's the way I do it with the AT-100, but I use the old-fashioned method with WinPV and PV Tune--i.e. not "autotune," which I've never used. I'm pretty **** with my tune adjustments and like Kb5rbd above I analyze the before-and-after results to make only the changes I want. Usually that's only a few cells in the VE tables, sometimes none at all. OTOH I don't use the smoothing feature.
Last edited by iclick; Jun 12, 2013 at 01:20 PM.