Power Vision
You can get some decent results with the Auto-Tune. But you're going to have to really spend some time and learning how to tune IMO. With the narrow band sensors and some exhaust systems again in my opinion you really have to know what you're looking at and learn how to manipulate your VEs where you may not be getting good data. If you spend the money on wide-band and it's not something you really want to learn and get into you may be better off just going down and getting the dyno tune.
you're really going to get out of the tune what you learn and put into it. Really
Love the Auto tune function. Have quite a few and try to when the conditions change... such as when I just had the heck loaded out of the bike on the way to the keys for a week.
Trending Topics
To answer your question, yes... give AT a try. Watch the instructional AT videos on FM's site. It's fun to do and interesting to play with. Run a few AT sessions per their directions. If your average cell change gets to within 4%, you're done. See if you like the way the bike runs, if not, have FM tweak the map or go to a reputable dyno operator...
Extraneous info---
I have two EFI HDs, both on my powervision tuner, and both started out with FM maps. They were auto-tuned using basic and AT Pro. Both run really well.. I'm no tuning expert, but I'm learning and like playing with the tuner. I am unaware of a good dyno operator in my area, so the FM map w/ AT works for me...
FM is a good, respected tuner. I have used my PV tuner, with additional licenses, for 3 close friend's bikes. One stock and two Stage I. They are all thrilled with the way their bikes run with the just the FM maps, and don't feel they need an AT session.
Why auto tune? There are always differences between two of the exact same bikes, with exact same mods. Most of these differences will show in VE tables. The AT basic will allow you to dial in a good base map for your bike/mods, to your specific VE values. The key is to start with a really close map from a good tuner. You have that with FM.
I always reload the original FM map to the bike after an AT session. I then compare the FM map, to the map suggested by the AT session, on the computer. I like to see where and what the AT session wants to change. If it wants to make drastic changes outside the range of the narrowband sensors, I don't allow the change or reduce it's percentage of change.
After reviewing, and satisfied with the changes, I'll then load AT session1 tune, for a second AT session if average changes are over 4%.
Remember, the AT isn't really tuning your bike, it's just dialing in a good map made on a similar bike, to your specific bike. If you are using AT basic, it's changes will be limited by the range of the narrow band O2 sensors. When using AT basic, I try to fill the cells within it's range, which will be around the cruise areas and areas normally contained in the closed loop portion of your map tune. I ride my bike conservatively while doing AT basic.
For fun, I bought the AT pro module. If I use the wide band O2 sensors & AT Pro for an tune session, I will then also try to fill the cells for heavy load and hard acceleration, to dial in areas of the map in extreme open loop areas, and within the range of the wide band sensors.
My bikes run well, and get acceptable gas mileage, so I'm happy enough with the way they run, I don't feel the need to roll the dice on an unknown dyno operator.
Enjoy and learn at the same time...!
The Best of Harley-Davidson for Lifelong Riders
To answer your question, yes... give AT a try. Watch the instructional AT videos on FM's site. It's fun to do and interesting to play with. Run a few AT sessions per their directions. If your average cell change gets to within 4%, you're done. See if you like the way the bike runs, if not, have FM tweak the map or go to a reputable dyno operator...
Extraneous info---
I have two EFI HDs, both on my powervision tuner, and both started out with FM maps. They were auto-tuned using basic and AT Pro. Both run really well.. I'm no tuning expert, but I'm learning and like playing with the tuner. I am unaware of a good dyno operator in my area, so the FM map w/ AT works for me...
FM is a good, respected tuner. I have used my PV tuner, with additional licenses, for 3 close friend's bikes. One stock and two Stage I. They are all thrilled with the way their bikes run with the just the FM maps, and don't feel they need an AT session.
Why auto tune? There are always differences between two of the exact same bikes, with exact same mods. Most of these differences will show in VE tables. The AT basic will allow you to dial in a good base map for your bike/mods, to your specific VE values. The key is to start with a really close map from a good tuner. You have that with FM.
I always reload the original FM map to the bike after an AT session. I then compare the FM map, to the map suggested by the AT session, on the computer. I like to see where and what the AT session wants to change. If it wants to make drastic changes outside the range of the narrowband sensors, I don't allow the change or reduce it's percentage of change.
After reviewing, and satisfied with the changes, I'll then load AT session1 tune, for a second AT session if average changes are over 4%.
Remember, the AT isn't really tuning your bike, it's just dialing in a good map made on a similar bike, to your specific bike. If you are using AT basic, it's changes will be limited by the range of the narrow band O2 sensors. When using AT basic, I try to fill the cells within it's range, which will be around the cruise areas and areas normally contained in the closed loop portion of your map tune. I ride my bike conservatively while doing AT basic.
For fun, I bought the AT pro module. If I use the wide band O2 sensors & AT Pro for an tune session, I will then also try to fill the cells for heavy load and hard acceleration, to dial in areas of the map in extreme open loop areas, and within the range of the wide band sensors.
My bikes run well, and get acceptable gas mileage, so I'm happy enough with the way they run, I don't feel the need to roll the dice on an unknown dyno operator.
Enjoy and learn at the same time...!
really, the most complicated part of it is that he reloads his original map so he can compare the original with the suggested changes to see if there is anything obviously hinkey going on....










