Has Anyone Installed a Power Commander?

I have used them on 2 bikes, on my Ducati Monster and on my old Husky TE250 I used a PC5 with autotune.
The autotune feature makes sense and seems to work perfectly. It takes away all the guesswork.
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On both of those bikes it was a required part of the de-corking. ;-)

Essentially, if the bike isn't getting the right air/fuel mixture you need to do something.
In my opinion the autotune feature is fantastic, but expensive. But personally, I'd compare the price of the autotune to the cost of tuning on a dynometer.

The other way to set up bike is to follow an exact cookbook from a company that has a good reputation. I mean a specific intake and exhaust setup with a tuner map configured for that exact setup. (I did that with my KTM 350 EXC-F.) That is the recommended "easy way".

Back in 2004 I modified my Ducati Monster and spent some time on the dyno getting the jetting right. You can see the nice flat air fuel curve at 12.69 below. This was done by me manually adjusting the mapping on the computer. The autotune does this for you. (You can also se how lousy the A/F mix was stock, with a big lean dip in the middle.

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Do any of the other brands of tuners read the O2 sensors and self adjust? I don't know all the differences between the coober, powertronic, rapidbike, etc. I've heard the rapidbike offers an"auto tuner". I think the coober is designed to work with a specific cookbook of modifications. I'm not sure about the powertronic.
Personally, I believe if you don't monitor the O2 sensor or go to a dyno and watch the a/f mixture you don't know what is going on...
 
Good video Ben!
That is exactly what I mean when I say "if you don't monitor the O2 sensor or go to a dyno and watch the a/f mixture you don't know what is going on..."
lt is important to understand the difference between an open loop and a closed loop system.

Here is a good blurb a surfed up:

Defining Open Loop and Closed Loop o2​


Open loop is when the ECU is not referring to the o2 sensor for feedback. Meaning that the o2 sensor might as well not be there, because the ECU is not using it to modify its timing and fuel maps. If your asking yourself why the ECU would ever want to do this? It is because there are times when you want the motor to run a set amount of timing and fuel, no matter what the conditions. For reference, most OEM cars are tuned to run closed loop o2 on partial throttle driving to get the best gas mileage, and then run open loop on wide open throttle (WOT) to be sure the motor runs the safest it can, and that the factory fuel map is not modified in any way. Closed loop is when the ECU does refer to the o2 sensor for feedback. Using the o2 sensor the ECU will modify its fuel table based on the readings the o2 sensor is seeing. This is important in maintaining a perfect A/F ratio as there are so many variables affecting the tune of a motor at any given time. For example, air temperature, altitude, humidity, and so on.​
Click to expand...
from here: http://www.enginebasics.com/EFI Tuning/Closed Loop o2.html

Closed loop can be good, as minor tuning changes can often be fixed automatically by the ECU. But they can also get in the way of some external piggyback style tuners.
I guess for many modern bikes, they may run closed loop all the time and you need to account for that with the tuner design.
Does anyone know, Are the 701 "closed loop" all the time?
 
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