This an awesome thread! Just what I needed to get my head wrapped around what is going on being new to the tuning side. Thanks iclick!

 

I need some answers and hopefully bringing up this thread will summon some of you to help! LOL

I am working with my PC5....for 4 yrs now. Do note, I've used Power Commanders since 06....

so...questions...
AT (autotune) on, everything is out the door, AT wants to keep you at the set A/F on the AT tables...allowed because Optimizers put it in OPEN LOOP.

AT OFF, the ECM uses the factory fueling PLUS(or minus!) the fuel tables on the PCV, and therefore the ECM is still allowed to add (or subtract) fuel based on LOAD (whacking the throttle, hard acceleration, etc) and then of course would not be following the AT's tables at all, but will be close because the factory O2's are not working due to the Optimizers putting the bike in OPEN LOOP.

Wouldn't the factory ECU demand more fuel based on LOAD? I know you are tuning the Power Vision as such....just trying to justify leaving AT on or off??? If the AT is on, then the fuel will always be as the a/f trim tables are set...so whack the throttle and you won't get extra fuel!!!

Correct????

 

and btw...I've been running in open loop (no Autotune) with my 'autotuned' map created from zero....seems to run great.

 

Auto tune isn't changing anything while you're riding, you have to accept the trims and re-load the tune. I would only run auto tune while I was doing tining runs.
Mark

 

You sure? I think it's live when it's on. The trims are real. If the trims say -15, it's pulling -15 from the base map. When you actually accept them, they change the base map....but leave it on and more autotuning will happen....

That's always been my take...

 

I don't think it's tuning in real time, I could be mistaken, Mac is the one you need to get with, he knows for sure. Even my Power Commander Vision doesn't tune in real time.
Mark

 

really need some answers please!!!!

 

I know with the power vision it's not live. I have to accept all the learned values, save it, and load the new tune

 

On PC5, the Autotune is live when turned on, a kinda primitive closed loop, just checked with Dynojet...

 

Interesting. So I would think that the best bet is to have it learn a few times until a satisfactory correction rate to complete a decent base map. Then to leave it on to act as a basic closed loop system?