Power Commander Pros/Cons

Changes in elevation may account for some of the issues I'm having. I live at a higher elevation than when I had it tuned and then traveling about this area the elevation varies quite a bit. Glad you mentioned that- thanks.
 
TURBO200R4 said:
i have one i used for a couple of months it is like brand new. 130 plus ship. going on vacation real soon.
the pc5 will let u use two maps if u install a switch.
on my 07 i either needed a tuner or the auto tune
Click to expand...

Well, darn, just found one for $200 on flea bay and thought I was doing good. Wish I had seen your post earlier.
 
I installed an air/fuel gauge and a wideband o2 so I can constantly see my bikes state of tune. Elevation and temperature seems to have no effect on my custom tune.
 
OK, Have a PC 5 waiting for me to install and have the auto tune device on its way. Both bought used off fleabay. I plan to reload the PC tune my guy did (currently running a TuneECU conversion of that tune) and add the autotune to see what improvements it makes. Not sure how to use AutoTune so I may be back with more questions....
 

How To: Add Pressure Input for PC-V

So after a few years playing with PC-V and TuneECU, I've come to recognize a problem, exacerbated by the big cams in my bike. The fuel table using throttle position vs RPM isn't granular enough to really perfectly tune the low throttle position parts. Most of the time when riding legal speeds...
www.r3owners.net
 
vindex1963 said:
I installed an air/fuel gauge and a wideband o2 so I can constantly see my bikes state of tune. Elevation and temperature seems to have no effect on my custom tune.
Click to expand...
ime - Elevation and thus ambient AIR pressure does most certainly have an affect. 20% less pressure is 20% less. Temp less so - the R3 is after all a low compression block.
 
barbagris said:
ime - Elevation and thus ambient AIR pressure does most certainly have an affect. 20% less pressure is 20% less. Temp less so - the R3 is after all a low compression block.
Click to expand...
Air/fuel ratio doesn't seem to change no matter the elevation.
 
vindex1963 said:
Air/fuel ratio doesn't seem to change no matter the elevation.
Click to expand...
Because the stock ECU will correct within limits.

What however I do see is a change in ABSOLUTE intake manifold pressure running (cruising) at (say) 80mph at sea level and 1000metres. And can totally feel a different throttle response. But Nev is, as always, correct - we all tend to over think. I stand guilty - but it keeps me sane.
 
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