Learning2race
Expert Class
Posts: 138
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posted May 06, 2011 06:30 AM
A/F mapping assistance
After experiencing catastrophic failure of my motor last summer, I am finally ready to put the bike back together this weekend. I've added a few modified parts and will be in need of a new fuel map.The only place I can go to in my area is at the local Harley Davidson dealership. They have assured me that they can perform the job so I'll cross my fingers and try.
I'm seeking some knowledge before I go so I can try to determine if the tuning session is going successfully. First, I understand (maybe incorrectly) that a map can be made to a specific A/F ratio or for "best HP". What ratio should I aim for for maimum fuel economy, but without robbing all power, for just enjoying a day ride? Second, when I go the "max HP" route to compete at the track, what A/F ratio do I start to be concerned about where the bike is getting too lean and potentially causing damage - I certainly cannot afford to rebuild again!
Thanks in advance for your input
  
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Learning2race
Expert Class
Posts: 138
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posted May 06, 2011 11:47 AM
54 views but no response? There must be a dyno guy on here!!
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BLK ICE
Pro
we'll leave the light on for u
Posts: 1709
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posted May 06, 2011 01:24 PM
i would like to know also.
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Shane661
Needs a life
Posts: 11494
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posted May 06, 2011 01:33 PM
 Edited By: Shane661 on 6 May 2011 21:35
Try 13:1 a/f for the street, and around 12.7 - 12.8:1 for drag racing. I'm not an expert, but it works for me. 
If you are really concerned about doing this right, I wouldn't be taking it to the local HD shop for tuning. Take it to someone who makes a living tuning Japanese Sport Bikes.
If you have a Brock's exhaust, just use his maps, and save yourself the troubles.
Just my .02.
Shane
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Learning2race
Expert Class
Posts: 138
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posted May 06, 2011 02:11 PM
If a Japanese shop was available I'd be there!
I have Brock's maps for various applications, but am looking for something specific for the modifications added during the rebuild
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Compton
Zone Head
Posts: 969
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posted May 06, 2011 02:15 PM
Well why did your bike blow up before? And whats done to it now that it needs special map.
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b.w.
zx14, little longer, little louder, little lower.
08 Busa, just a little longer and louder and lower than the 14
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted May 06, 2011 03:10 PM
Race maps are mainly changed at 100% throttle, which you don't use on the street very much.
So you could really have the map set up for both.
Like said above, what are the mods that stop you from using brocks maps?
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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BlackMagic14
Needs a job
Posts: 2058
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posted May 06, 2011 04:50 PM
My impression has always been that Brock can make a map for most common motor mods that is really close.
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted May 06, 2011 05:35 PM
quote:
My impression has always been that Brock can make a map for most common motor mods that is really close.
When chris jones tuned my bike he used the brocks map as the base map, and just took a little fuel out of the 100% column.
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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