ECM Reprogram or not?
Outstanding HDF Member
Joined: Aug 2012
Posts: 3,217
Likes: 90
From: Detroit
I am not a big fan of the VIED or XIED's as they don't do much if anything in the open loop section of your stock tune. What these devices do is adjust the bias voltage from the O2 Sensor to effect a slightly richer AFR in closed loop. And slightly richer AFR is a good thing even in a totally stock bike. It amounts to a half a$$ed way to get the bike to run richer and hence maybe some better performance and a cooler motor. If you was to do nothing else to your bike i say at least do that to it. I am not sure if the 2014 ecm still reads 14:68 as the stoich AFR but if it does that s bad !!! Most places i see have 10% ethanol blend in there gasoline now and that alone drops the stoich down to 14:1 So it be running very lean if you do not.
Also, corrections (biases) made in closed loop will change the fueling in open loop, so that gets adjusted too.
Tourer
Joined: May 2013
Posts: 365
Likes: 1
From: under a rock in the swamp
Again guy, thanks for the input. This is my first American bike and the first with FI so the terminology is confusing to me, especially VIED/XIED. I have no idea what that is. I guess I should just go ahead and purchase a free flowing air cleaner, have the ECM reprogrammed and be done with it. I have a lot more reading to do so I can become more educated about this whole ECM programming thing.
as my father used to say. EFI has been hard for me to wrap my feeble mind around too. I still have a long way too go to fully understand the programing. But i want out bought me a power vision tuner and started to play with it and things became some what clear. I often wish some body knowledgeable would write a book on Power Vision or for that part any make of tuning for the dummies . Setting up AFR's was very simple simple. But the timing tables is where i scratch my head at. in the days of my wrenching we had points adjusting timing was easy. Now you have a ton of adjustments at many locations all dependent on VE tables, rpm,load etc etc.
How the heck is a back yard tinker type such as me to fully grasp all this is mystifying to me. there is plenty to learn for sure and it seems the folks in the know about this stuff are mom on the advice. I can understand it though they trying to make a honest buck doing this work. But it sure be nice if there was a forum where tried and true map's could be placed where folks could both post there map's and also retrieve or review other's
Grand HDF Member
Joined: Jun 2008
Posts: 3,982
Likes: 2,141
From: Ohio
HD canned map is a JOKE DO NOT WASTE YOUR MONEY, increase rev limit is not a tune it is a half *** attempt at jacking poeples money. Just pipes no intake your cool, and vice versa, if you run both get a real tuner and run a canned map, dyno if you do internals like cams and head work. do not use the SE map HD will try and sell you. JUNK *** tune
I've owned 6 different HD's. Every one had some kind of tuner installed, except the last one, which I own now. I've spent THOUSANDS of $$$$$$ over the years listening to people tell me that I "need" a tuner. I listened and tried them all. Personally, I wouldn't use a Power Commander again if you gave me one! I had nothing but trouble with them, and my bike ran much better stock. With the last new bike I bought, I swore I wasn't going to go that route again. So I talked with dozens of people I know who have JUST THE DEALER DOWNLOAD, and every single one of them are extremely happy with it. My BIL has over 60,000 trouble free miles on his StreetGlide with just the download, and another friend of mine has 73,000 on his ElectraGlide. I installed the SE airbox, Vance and Hines Twin Slash slipons, and download, and my bike runs GREAT!! I've had zero problems in three years. No popping, backfiring, throttle lag......nothing at all. Clean, crisp, quick. For me, and most everyone else who has it, the simple download is cheaper, easier, and works great.
I truly have no idea why everyone bashes it. I've not met anyone who's had it that wasn't satisfied with it, unless they wanted to build their engine more. If all you want is a simple stage one, and nothing more, the download is the way to go, IMHO.
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Last edited by hd4evr2008; Dec 5, 2014 at 02:30 PM.
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