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which map and cylinder trim values?

Discussion in 'Motorcycle Tech Talk' started by twincam, Nov 24, 2004.

  1. twincam

    twincam New Member

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    Hi, got a couple of questions. I brought V&H true duals, ovals and a PC3 from you. Put them on my '04 FLHT/I, which already had stage 1 kit and reflash. PC3 really helped. I'm trying to tweek. I tried m807-125, m807-038, noticed there is now a m807-151. Doesn't say it has true duals, but otherwise describes my bike. My questions are:

    Which of these should be closest and

    What typical cylinder trim values should be used. (In my mind, cyl. 1 should be enriched and cyl 2 should be leaned. I set them to 1= +2, 2= -3) seems to sound best there)

    I also noticed these maps all have a different idea for the ignition table values. Any ideas why, and which concept is best to use?

    Thanks ahead of time for great products and support, Jeff
    twincam, Nov 24, 2004
    #1
  3. hotroadking

    hotroadking Super Moderator Staff Member

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    All the download maps are going to be "close" some are not as close as the description.

    The best bet IMHO is to get to a good dynojet tuning center and let them build a custom map for you on the dyno.

    This will get the unit tuned specifically to your bike, you'll get better fuel mileage and more power.

    One gauge is the MPG you get, if it's really high then you're lean if it's really low then the map is rich. What ever you were getting stock you should be close to when you install the map, depending of course on riding style.
    hotroadking, Nov 24, 2004
    #2
  4. twincam

    twincam New Member

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    Thank you hotrodking, it's a little low (milage). I can tell it's also a little rich on the #2 cylinder as well, that's why I wondered what most guys that know what they are doing set thier cylinder trim values to on these motors. I figure there is someone out there with the same setup as I have that's already went through the shop and would know what they did. Also, I'm still curious why there is so much difference in the ignition tables between these maps, which should all be simular.
    twincam, Nov 24, 2004
    #3

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