Power Commander V ?????
All you have to do is research a little about experiences guys have had with dealers installing aftermarket performance hardware, then refusing warranty service to the motor if something goes wrong. Harley dealerships seem to have lots of turnover, so when your man is gone and you come in with a problem related to your pcv or other non hd hardware, good luck.
Thats why you should learn to do this simple stuff on your own.
GP
The Best of Harley-Davidson for Lifelong Riders
Fuel Moto maps tend to run a bit rich, for my taste anyway, as they tune for about 13.8:1 in the cruise range. You can subtract 5-7% in the cruise range (5-15% TP @ 2k-3k RPM) safely, how much depending on the year-model. If you are going to order a PCV from FM, just ask them to install the "mileage map" and they'll do this for you. A friend with a '10 SG bought an FM Power Package, I subtracted 7% from his cruise range, and his mileage has been in the mid-to-upper 40's in highway riding, right about where I am at this point. He has seen no adverse side-effects and oil temperatures have remained very good even without a cooler. I haven't succeeded in getting my bike or any other out of the upper-30's in city riding, so don't expect miracles.
Those of you who have the PCV and have had dyno tunes performed by a local tuner, you may be too rich in the cruise range, which will obviously affect mileage. If I was in that situation I would do the following:
1. Copy the map to your computer's hard drive and give it a unique, descriptive filename, like "ORIG-MAP.PVM".
2. Go to the PC website and download a map that's as close as possible to your hardware setup.
3. Transfer only the values in the Fuel Adj. tables (both cylinders) that correspond to the cruise range. We will assume the map has been tuned properly for WOT (around 13.0:1) so we'll leave that as well as the transition areas alone.
4. Subtract 7 from each value by selecting the entire range (5-15% TP @ 2k-3k RPM) with your mouse, just as you would select a group of files in Windows Explorer, and hitting the PG-DN key seven times.
That should get you into a safe AFR range that should improve gas mileage without causing too much of a heat increase. Test-ride the bike and check for any unacceptable heat, detonation, or surging. Some surging at low-TP (e.g. 5%) in lower gears, like cruising in a 30mph zone, is okay if not excessive and there is no hesitation. If all is well and mileage still isn't where you want it, subtract more from the cruise range, perhaps -3 at a time--but I wouldn't go more than -10% total or let the Fuel Adj. value in any given cell go much below zero. You can tell quite a bit about the AFR by the way the bike runs. AFRs that are too lean are usually indicated by detonation, surging, and increased heat, although my bike runs only slightly cooler (front-head temp) at a 13.5 AFR compared to 14.6--around 5-7°, which isn't much, and I can't feel any difference in heat or throttle response. YMMV, but these are my experiences. Those of you with AT-100 attached to the PCV may want to read this write-up about setting up a hardware switch so you can have your cake and eat it too.
Last edited by iclick; Aug 1, 2011 at 11:36 AM.




