I have a 07 road king with a stage 1 download I had it a dyno run on it and the air/ fuel was at 14.6 -14.7 is this to high when you put on a sert the close loop setting is 14.6 anything else will turn off the close loop at that cell. What I am try to ask is with this air/fuel mixture will my bike burn up or anything go wrong because of this, if Yes why does Harley use this setting I know because of epa but you would think they would lose a lot of money fixing all these burn up bikes.

 

G'day
I have often wondered at just what point the bike would actually sieze or be damaged. One thing I know is that at 13:1 (open loop, no auto tune, T Max), my dyna runs PERFECT. It sure reduces the MPG, but you feel great knowing that it is rich and cool. Some go up to around 14:1 at cruise RPM, which I may try one day, or just leave well enough alone. In fact a mate who was following me the other day said he could smell fuel sometimes, which made me happy!! I read abike mag test where the download acheived the same results as you got; I believe they quoted 14.8 - 15.1: 1fully stock standard, when they fitted the PC111 they tuned it to around 13.5 :1 and said it ran much much better...... my .02c.

Graham (06dyna)..

 

I agree with squeeech. PURPLE HAZE.

[IMG]local://upfiles/24725/30E0F4F3F6F94F218DF434111FFC8A16.jpg[/IMG]

 

My a/f is pretty much like squeech about 13.2 and i'm happy with the results. Air off the rear cylinder seems much cooler.

 

I've leaned the cruise range of my PCIII map considerably, probably to around 14:1 although I haven't checked it, and have no performance issues. Oil temps are under control and mileage is quite good, around 50 mpg on backroad rides around 55mph. An oil cooler helps with the cooling, BTW.

 

Most tuners try to keep A/F at 12.8-13.2 under acceleration, up to 13.6-13.8 while cruising when cooling takes priority over mileage. An A/F around stoich (14.7:1) is lean and when run on an air-cooled engine will run hot, hot, hot. Stoich in a water-cooled engine is another matter. I would rather see around 14.0-14.2, as I think this would be a good compromise between cooling and mileage. I think I have my PCIII map in that range now and the bike runs cool and mileage is quite good.

I'm not an expert on SERT, but I've heard you can lower the A/F in closed loop mode across the board to 14.2:1. I would try this, as I think that might be a good compromise between the hot running and good gas mileage.

Harley uses 14.7:1 because the engines must meet EPA requirements. It's either do that or don't sell the bikes, so therefore they run hot as hell.

 

If you max out the closed loop bias table, it should run about 14.2. I have an 07 fxstc with se a/c and rush slip ons. I loaded the map that came the closest, maxed out the cbl table. The first thing I noticed, well the power was the first thing, but the second thing I noticed was when I shut it off, there is only the occasional plink or ping as the parts cooled down. Before it sounded like someone was reciting a chinese phone book.
Sitting at a stoplight in 90' weather is no longer torture. The big plus is all that power and still 40 - 42 mpg.
Good luck.

 

I did the same thing that Chester did my bike ran good at wide open but when in a parking lot itpop and backfire like a mother I do not know why either. I think that in the parking lot I was in close loop and it was to rich at that rpm’s

 

There is such a thing as too richwhich can result in washing the cylinders down with gas/oil rather than just oil. Not a good thing.
If your friend could smell fuel it maybe running too rich.
I had the same thing after I had rejeted the carb. So I took it in to the local indy and had it run on the dyno and it was setup too rich for running under load. Only took around an hour to jet it correctly and runs great now.

My $0.02.