Ignition/Tuner/ECM/Fuel Injection Need advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.

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Old Nov 27, 2010 | 02:13 PM
  #11  
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Originally Posted by harpwrench
Should I get the SE training DVD when I get the software and cables?
Thanks

No. That is extra as a separate part number.
 
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Old Nov 27, 2010 | 03:41 PM
  #12  
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Valve springs were part of the kit and were installed. Let me rephrase my last question...should I order the training DVD when I order the software and cables, or will the software include enough information to figure it out?
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Old Nov 27, 2010 | 10:07 PM
  #13  
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Originally Posted by harpwrench
Let me rephrase my last question...should I order the training DVD when I order the software and cables, or will the software include enough information to figure it out?
Thanks
If all you want to do is select a map from the list that is included with the software and flash it to your ECM, then No, you will not need the training DVD for that. That you can do using just the user manual that already comes with the SE software. Reading the PDF manual (+100 page) will teach you how to use the software and SE hardware along with loading maps..
 
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Old Nov 27, 2010 | 10:52 PM
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It already had the appropriate map loaded, and further dealer tuning, but it's still too lean. I'll need to make changes to that map by the seat of my pants/instincts, until I can get it to a professional tuner to do it correctly. It got up to 50 outside today, I got it out and let it warm up around 5 minutes and it still sneezed and died when I went to take off.
 
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Old Nov 27, 2010 | 10:52 PM
  #15  
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When you ask questions such as yours you will get a million different answers and opinions. In keeping with that tradition - here's mine...

Get a Power Commander 5 (PCV) w/AutoTune. FuelMoto is a good place to start.

With the PCV and AutoTune set-up you can tune it yourself. The AutoTune feature gives you some real data that you can use to adjust your fuel map. You won't be shooting in the dark.

On the other hand, if you don't want to spend the time doing the tuning yourself, then obviously, find a good tuner and use the tuning device they recommend.
 
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Old Nov 27, 2010 | 11:12 PM
  #16  
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Thanks, that's another sensible option I'd considered. Does the PCV/autotune yield better results for the DIY'er than the SEPST/autotune that I already have? I've been reading the archives for 3 weeks and haven't found anything really meaty to read about the SEPST. If anyone can point me to the correct info to educate myself that would be appreciated too.
Thanks-
 
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Old Nov 27, 2010 | 11:43 PM
  #17  
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I can't answer any questions on the SEPST. Just haven't had any experience to base from.

Years ago I installed a PC III on my '02 Duece and was always happy with it, so when I got my new bike the PCV seemed the logical choice for me. No regrets.
 
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Old Nov 28, 2010 | 06:12 AM
  #18  
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Originally Posted by harpwrench
Thanks, that's another sensible option I'd considered. Does the PCV/autotune yield better results for the DIY'er than the SEPST/autotune that I already have? I've been reading the archives for 3 weeks and haven't found anything really meaty to read about the SEPST. If anyone can point me to the correct info to educate myself that would be appreciated too.
Thanks-
The SEPST autotune will only set it at 14.5-14.7 afr, the bike needs more fuel. The software cd that comes with the tuner has a help section that tells you how to adjust and what does what. (which way to move the % to get where you want to go) I did mine myself, a little trial and error, was too fat at one point but read and you will figure it out. The instructions on how to tune it without a dyno are in there. If you work on cars and are good at driveability it should not be a problem to do yourself. Thease things are not rocket science, they use an EFI system that was used on GM cars in the late 80's. with a smarter ECM. Just my .02
 
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Old Nov 28, 2010 | 07:36 AM
  #19  
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Originally Posted by harpwrench
It already had the appropriate map loaded, and further dealer tuning, but it's still too lean...
OK, I'll ask...how do you know it's too lean? Has it begun to burn pistons or valves??
 
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Old Nov 28, 2010 | 08:21 AM
  #20  
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Originally Posted by Blk and Chrome
If you work on cars and are good at driveability it should not be a problem to do yourself. Thease things are not rocket science, they use an EFI system that was used on GM cars in the late 80's. with a smarter ECM. Just my .02
What you say is all true. The one BIG (and I mean BIG) difference between automobiles and our Delphi system is that we do not have a mass air flow sensor to tell the ECM how much O2 is going into the engine. We must define that by hand using the VE tables and hand enter those values based on comparing the actual vs desired A/F ratio. The base VE maps are just starting points and from my experience (on my bike) they were very far off.
But I agree with you about the auto tune only having .5 of 1 ratio point of adjustment. It is not enough.

=>HarpWrench. You MUST check your fuel pump pressure first. It **MUST** be above 58 PSI. If the pressure regulator in the tank, or some other issue (leaking regulator hose) is making you loose fuel pump pressure, you will chase yourself in circles. For an "off idle bog" and lean running in general, I would *FIRST* check my fuel pump pressure. Do not start changing values in the maps until you check your fuel PSI.
 
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