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Stock Air-Fuel Ratio?

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Old 10-18-2007, 12:51 PM
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Default Stock Air-Fuel Ratio?

With the 2007 touring bikes, does anyone have info on the stock Air-Fuel Ratio's and stock VE, and Spark Advance Tables, etc.
I would like to compare them with the #78 SERT map. I guess, what I'm looking for, are the differencesbetween the stock numbersand the #78 map, how much does it richen up? How much of the stock mapis in closed loop? etc.
 
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Old 10-18-2007, 01:10 PM
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Default RE: Stock Air-Fuel Ratio?

if I'm not mistaken, we don't know. Unless your dealer has a way to find out. I have a SERT, and is unable to know what was there before hand. Nor will I be able to reload the stock map unless I take it back to a dealer to flash it..........
 
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Old 10-18-2007, 01:12 PM
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Default RE: Stock Air-Fuel Ratio?

Sorry I don't have an exact answer but I have ran the Twinscan II with sniffers on a Stock 07 Ultra, it ran right in the 14.7 to 14.9 range at idle and cruise speed and never got richer than 13.5 to 1 but I really did not spend a whole lot of time on it either, I did notice that the stock timing was very conservative and ran only 12 degrees at idle, I also noticed that the headpipes glowed orange in less than two minutes when ran on the lift. As far as getting a stock map, you would need the HD digital technition, Maybe Shovelhead Bob has a copy?
 
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Old 10-18-2007, 02:19 PM
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Default RE: Stock Air-Fuel Ratio?

It's too bad we can't see the stock numbers. What you are saying about sniffing no lower than 13.5:1 makes sense to me.
and of course running leaner the spark advance would need to be lower.

When I look at the #78 map, it has a strange Air-Fuel Map and Spark Advance in the 750 to 1250 rpmwhen theMAP is in the 80 to 100 range, 14:6:1 fuel ratio and -4 to 0 spark advance. At 1500 rpm the fuel ratio is 13:1 and the spark is just starting to go positive. The rest of the spark advance map areas arearound 18and above. What would the reasoning for doing this? I would think this is the start of rolling on the throttle from idling at a stop.
 
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Old 10-25-2007, 12:02 PM
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Default RE: Stock Air-Fuel Ratio?

Bump
 
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Old 10-25-2007, 12:39 PM
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Default RE: Stock Air-Fuel Ratio?

Interesting information

Waiting for Dyno Results on 06 Cop Glide tonight

A/F numbers will be interesting

 
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