despicabledan Posted September 3, 2018 Share Posted September 3, 2018 Heyo, Just wanted to update people with my pc5 tweaks for any of you that may have pc5 w/ autotune on your bike. I went with the supplied A/F settings from Dynojet when I started using this, below you will see that they had programmed it to run quite rich, especially in the 2% throttle range, which seems very odd to me. I put in my own settings, which is basically exactly what I did on my vtwin cruiser, and after riding around for 100 miles or so I can definitely tell a difference in fuel consumption, along with low rpm smoothness. For instance taking off from a light was sort of boggy with the other map, where the new one is smoother with the leaner 13.7 setpoint. Link to comment Share on other sites More sharing options...
Urbanengineer Posted September 3, 2018 Share Posted September 3, 2018 Both seem extremely rich, isn’t the ideal goal 14.7 AFR or something? Thanks for sharing. Link to comment Share on other sites More sharing options...
despicabledan Posted September 4, 2018 Author Share Posted September 4, 2018 Yeah 14.7 is the ideal AFR, but I think optimal performance and ideal are not the same. Link to comment Share on other sites More sharing options...
Urbanengineer Posted September 4, 2018 Share Posted September 4, 2018 True! I would want a map switch for highway cruising for better fueling. 11.4% less fuel for 75 MPH Highway cruising (14.7 AFR vs 13.2 auto tuned). Link to comment Share on other sites More sharing options...
Member Contributer Marvelicious Posted September 5, 2018 Member Contributer Share Posted September 5, 2018 I've never played with the maps on my PC3 (bought the bike with it and it runs fairly well as is, so I haven't played with it), so I'm throwing out speculation here... I can't help wondering if you couldn't get away with even leaner settings at the left side of the map. If you're only using 2% throttle, you obviously aren't putting much of a load on the engine... I would think the idea is to come up with a map that gives you good power when you roll into it, but sips daintily at your fuel supply when you're cruising. Switching back and forth between different maps sounds clever, but I think in the real world I would probably forget it is there and just wind up running with it in "power" mode all the time. I don't know about you, but I tend to twist that round thingy with my right hand when I want more power! Link to comment Share on other sites More sharing options...
despicabledan Posted September 5, 2018 Author Share Posted September 5, 2018 Yeah I just didn't want to go too crazy the first I'm I switched them around. As time goes I'll probably lean it out some more. Link to comment Share on other sites More sharing options...
mvvette97 Posted December 4, 2018 Share Posted December 4, 2018 I tried the auto tune but didn't really have much luck with it. I ended up just installing an innovate wideband on the bike and just tuned off that. The bike finally runs the way it should. No surging and smooth as butter and gets about 48mpg. Link to comment Share on other sites More sharing options...
Guest Posted March 22, 2019 Share Posted March 22, 2019 I have the PCV + Autotune ready to install. Dynojet currently advocates using both stock o2 sensors in addition to welding in a bung for their wide band sensor. Has anyone run with just one stock sensor, one eliminator in the 2nd stock connector, and the Dynojet wide band sensor in the 2nd stock hole and wired to the Autotune? I'd like to not have to remove the header to have a new bung welded in place. Link to comment Share on other sites More sharing options...
Member Contributer Marvelicious Posted April 1, 2019 Member Contributer Share Posted April 1, 2019 No answers for you, but I'm curious, where did that info come from? The info I have found on their website is pretty anemic. It seems like having both sets of o2 sensor active would just force the two computers to constantly fight each other's corrections. Link to comment Share on other sites More sharing options...
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