raptor14
Expert Class
Posts: 264
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posted July 21, 2007 06:38 AM
PC Throttle Position Setting
The Throttle Position setting on the Power Commander can get out of whack after a while so you should check it periodically. When resetting it is important that you set the zero throttle position with the bike warmed up and running. Otherwise you can get some screwy TPS values. To set the 100% throttle you also need the bike warmed up. My method for setting 100% is a little painful and may not be necessary but it has always provided the best result. Make sure the 9V battery is powering the PC. The start the bike and let it warm up and start idling normally. If you haven't done so, set the 0% throttle. Now do this all within 3 seconds: (1) hit the kill switch to turn the bike off, (2) open the throttle fully, and (3) hit the set button for 100% throttle on the PC software. Now send the map with the throttle position settings to the PC and restart the bike. The PC software should indicate 0% throttle when the bike is idling. Turn it off with the kill switch and open the throttle 100% and it should display 100%. Close the throttle halfway and it should read 50%.
  
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted July 21, 2007 02:21 PM
 Edited By: dubious on 21 Jul 2007 15:25
WTF...
I don't think it has to be running and revved to calibrate 100%.
Good way to kill an engine!
The rev limiter may not cut in quick enough when the engine is free revved and drive some valves into pistons!
Valve float!
Not to mention rod stretch.
Sorry to stand in here,
but I will never rev pinned against the limiter throttle wide open in neutral... aint gonna happen
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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ZXLNT
Needs a job
Kawpuke Extraordinare
Posts: 2853
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posted July 21, 2007 03:07 PM
Dub, he isn't revving the bike while running. Read closer 
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FasterThanStink
Pro
Posts: 1218
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posted July 21, 2007 03:44 PM
Dubious you better get some bifocals! :P
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Speed has never killed anyone,
suddenly becoming stationary...
That's what gets you.
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dubious
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Needs more time to ride!
Posts: 8442
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posted July 22, 2007 04:47 AM
OK , my bad...
misread LOL :P
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87gtNOS
Zone Head
Posts: 620
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posted July 22, 2007 05:02 AM
hmm, mine was zero to 100%, then I turned up my idle a little bit, now it's 2 to 100%!!
I may change it back to zero to 100.....maybe...
____________
01 ZX12R
07 ZX14 - YEAH BABY!
03 ZX9R-traded in for the 14!!! June 07!
05 636-traded in for the 9 Sept 05
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raptor14
Expert Class
Posts: 264
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posted July 22, 2007 05:36 AM
Yeah dubious, even I'm not stupid enough to fully open the throttle on a running bike that has no power applied to the rear wheel. Maybe back when I was in the 2nd grade or something, but I sure wouldn't do that now. A lot on newbies to PC's don't realize that you need to calibrate the throttle position on the Power Commander to get optimum performance out of the map. That was the real impetus behind my post.
I did note that you get vastly different readings for 0% throttle if the bike isn't running and warmed up. If the bike is off and the throttle opened to 100% I get vastly different readings for a cold engine verses a warmed up engine. Dynojet states that the engine has to be warmed up. The 100% throttle readings can change within the 3-second interval that I mention, although they don't really change by much. I think the main thing is just get the engine warm and then turn it off to get the 100% throttle measuement.
On the results side, I did a 200 mile ride yesterday after readjusting the TPS on the Power Commander. The decel backfire was reduced significantly and in some cases did not occur at all. Part power throttle response based on my seat of the pants dyno was also improved.
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted July 22, 2007 07:56 AM
Sorry, Sorry !
I never meant to insult anyone...
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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