Online: softfat

EFI Guru"s Help Needed

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  • AJ56
    AJ56
    13 years ago
    Probably not fitted. The sensors you can get through HH for about $50,00. The hook them up. There should be connectors available. I just had a look at the wiring diagrams for the 05 model and the ecu has the capability to take O2 Sensors.
  • HogBag
    HogBag
    13 years ago
    Scouser
    The cheapest way is to talk to your dealer about a SE download cartridge. The dealer can flash your ECM with the digital technician for minor upgrades like a stage 1 kit.
    If there willing to down load the cartridge there's one on fleabay.com for $15 .

    http://www.ebay.com/itm/Harley-Screaming-Eagle-Download-Cartridge-P-N-34277-06-/200661634382?pt=Motorcycles_Parts_Accessories&vxp=mtr&hash=item2eb85d8d4e
  • JD
    JD
    13 years ago
    been a grey isnt the ecm ajustable from factory ?

    If not I go with the Harley super tuner very easy to use
  • JD
    JD
    13 years ago
    i used a cannned map then smart tuned it was easy because it will record 15 mins did a few runs. did a few diffent things with each run .I should,still do a few more but not got the doc clearance yet.

    because the doggle records I rode the bike down to the nearest freeway M5 before I got on the freeway I hit the black button then hit the freeway.

    I read some where that in the states the ecm is ajustable thats why I asked the question .
  • JD
    JD
    13 years ago
    i still ride a little but not far.
    I watch the harley training vid alot of times read the instrutions over a few times and havent had any problems so far
  • AJ56
    AJ56
    13 years ago
    If you fit the Open loop tuner it would have to have to sensors fitted to get the info to make adjustments. Then it would no longer be in open loop, as you would have to run it at 14.6 AFR for the ecu to make the adjustments.
  • buznuts
    buznuts
    13 years ago

    If you are intending to use any self learn function of any tuner, you will require the afr sensors, if not the ecm does not have any feedback data to self learn from. Using a better widw band sensor for initial set up and then the use of self tune or closed loop with thw std narrow band sensors is the accepted way of tuning any efi combustion engine.

    Hope that helps- Ant

  • lonewolf
    lonewolf
    13 years ago

    Oz, you have that a little sideways. You do need the o2's for the ecm to learn. It's the voltage from the o2's that let's the AFV's learn. On an open loop bike you will tune to 13 or 13.5 to calibrate the ve tables and then reset your afr table to the values you want. The reason to set the afr tables to one value is it lets you calibrate to a straight line when looking at your afr sample. Hopefully the tuner knows not to leave them there.

  • buznuts
    buznuts
    13 years ago

    If we really want to be accurate the actual AFR will depend directly on load, rpm, cylinder pressure, charge and engine temperature. Using a combination of torque output vs acceleration rate there are also other considerations that must be made before you can even contemplate a predetermined AFR.

    Once you have made an educated  (experienced guess) as to where you would like your afr to be optimal, you must then use a series of professional equipment to establish any change in engine frequency from uncontrolled combustion and let the engine tell you where it wants to be. That is of course once consideration is given to the level of octane that is available in your fuel and the intended use and barometric pressure range you intend to run your bike at. Once all of that is perfect you can simply turn your closed loop function on and you are done!!!

    Or if you really dont understand any of that you can also just tune it to run 13.???:1

    Regards- Anthony Rodrigues

    just trying to help again

  • hquick
    hquick
    13 years ago
    Trying to get my head around this stuff.
    I tune my blown 98 Suburban with a couple of different programs.
    I don't see any mention of using a wideband O2 sensor here?
    Are the stock sensors used by HD wideband or narrow band?
    Thanks
  • HogBag
    HogBag
    13 years ago

     

  • hquick
    hquick
    13 years ago
    Thanks...figured they would be but seeing no mention of WBO2's made me wonder.
    Any reason you guys don't run WB sensors (ie...install an extra bung) and tune with those...as they're much more accurate?
  • HogBag
    HogBag
    13 years ago

     

  • hquick
    hquick
    13 years ago

    I'm brand new to tuning bikes....so still looking for a good tuning package.

    I tune my supercharged chev with EFILive and Tunercats....so have 'some' experience with VE tables, etc...

     

  • HogBag
    HogBag
    13 years ago

  • hquick
    hquick
    13 years ago
    Haven't got it yet. Sorting the paperwork to import an 09 Muscle from LA. Sale is lined up.....Wayne at 'Chopaweeza' is going to be bringing it in for me.
    Trying to find out as much about them as possible before it gets here (about 8 weeks).
  • hquick
    hquick
    13 years ago
    I'm interested in the way these bikes are tuned. With the cars, they're forced into open loop, MAF is disabled, the VE tables are dialled in, then they're set back to closed loop.
  • HogBag
    HogBag
    13 years ago

     

  • HogBag
    HogBag
    13 years ago

  • HogBag
    HogBag
    13 years ago

     

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